void
ngx_debug_point(void)
{
ngx_core_conf_t *ccf;
ccf = (ngx_core_conf_t *) ngx_get_conf(ngx_cycle->conf_ctx,
ngx_core_module);
switch (ccf->debug_points) {
case NGX_DEBUG_POINTS_STOP:
raise(SIGSTOP);
break;
case NGX_DEBUG_POINTS_ABORT:
ngx_abort();
}
}
static ngx_int_t
ngx_start_worker_processes(ngx_cycle_t *cycle, ngx_int_t type)
{
ngx_int_t n;
ngx_core_conf_t *ccf;
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "start worker processes");
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
for (n = 0; n < ccf->worker_processes; n++) {
if (ngx_spawn_process(cycle, "worker", type) == NGX_INVALID_PID) {
break;
}
}
return n;
}
u_long
ngx_get_cpu_affinity(ngx_uint_t n)
{
ngx_core_conf_t *ccf;
ccf = (ngx_core_conf_t *) ngx_get_conf(ngx_cycle->conf_ctx,
ngx_core_module);
if (ccf->cpu_affinity == NULL) {
return 0;
}
if (ccf->cpu_affinity_n > n) {
return ccf->cpu_affinity[n];
}
return ccf->cpu_affinity[ccf->cpu_affinity_n - 1];
}
static void
ngx_http_groonga_exit_process(ngx_cycle_t *cycle)
{
ngx_http_conf_ctx_t *http_conf;
ngx_http_groonga_database_callback_data_t data;
http_conf =
(ngx_http_conf_ctx_t *)ngx_get_conf(cycle->conf_ctx, ngx_http_module);
data.log = cycle->log;
data.pool = cycle->pool;
ngx_http_groonga_each_loc_conf(http_conf,
ngx_http_groonga_close_database_callback,
&data);
grn_fin();
return;
}
static ngx_int_t
ngx_squ_file_module_init(ngx_cycle_t *cycle)
{
int n;
ngx_squ_conf_t *scf;
ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0, "squ file module init");
scf = (ngx_squ_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_squ_module);
squ_getglobal(scf->l, NGX_SQU_TABLE);
squL_newmetatable(scf->l, NGX_SQU_FILE);
squ_pushvalue(scf->l, -1);
squ_setfield(scf->l, -2, "__index");
for (n = 0; ngx_squ_file_methods[n].name != NULL; n++) {
squ_pushcfunction(scf->l, ngx_squ_file_methods[n].func);
squ_setfield(scf->l, -2, ngx_squ_file_methods[n].name);
}
squ_pop(scf->l, 1);
n = sizeof(ngx_squ_file_consts) / sizeof(ngx_squ_const_t) - 1;
n += 2;
squ_createtable(scf->l, 0, n);
for (n = 0; ngx_squ_file_consts[n].name != NULL; n++) {
squ_pushinteger(scf->l, ngx_squ_file_consts[n].value);
squ_setfield(scf->l, -2, ngx_squ_file_consts[n].name);
}
squ_pushcfunction(scf->l, ngx_squ_file_open);
squ_setfield(scf->l, -2, "open");
squ_pushcfunction(scf->l, ngx_squ_file_info);
squ_setfield(scf->l, -2, "attributes");
squ_setfield(scf->l, -2, "file");
squ_pop(scf->l, 1);
return NGX_OK;
}
static ngx_int_t
ngx_zeromq_process_init(ngx_cycle_t *cycle)
{
ngx_zeromq_conf_t *zcf;
zcf = (ngx_zeromq_conf_t *) ngx_get_conf(cycle->conf_ctx,
ngx_zeromq_module);
if (zmq_used) {
zmq_context = zmq_init(zcf->threads);
if (zmq_context == NULL) {
ngx_zeromq_log_error(cycle->log, "zmq_init()");
return NGX_ERROR;
}
}
return NGX_OK;
}
ngx_thread_pool_t *
ngx_thread_pool_get(ngx_cycle_t *cycle, ngx_str_t *name)
{
ngx_uint_t i;
ngx_thread_pool_t **tpp;
ngx_thread_pool_conf_t *tcf;
tcf = (ngx_thread_pool_conf_t *) ngx_get_conf(cycle->conf_ctx,
ngx_thread_pool_module);
tpp = tcf->pools.elts;
for (i = 0; i < tcf->pools.nelts; i++)
{
if (tpp[i]->name.len == name->len
&& ngx_strncmp(tpp[i]->name.data, name->data, name->len) == 0)
{
return tpp[i];
}
}
return NULL;
}
ngx_int_t
ngx_signal_process(ngx_cycle_t *cycle, char *sig)
{
ssize_t n;
ngx_int_t pid;
ngx_file_t file;
ngx_core_conf_t *ccf;
u_char buf[NGX_INT64_LEN + 2];
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "signal process started");
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
file.name = ccf->pid;
file.log = cycle->log;
//打开pid文件，过滤掉里面的空格，找出pid进程id
file.fd = ngx_open_file(file.name.data, NGX_FILE_RDONLY,NGX_FILE_OPEN, NGX_FILE_DEFAULT_ACCESS);
if (file.fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_ERR, cycle->log, ngx_errno,
ngx_open_file_n " \"%s\" failed", file.name.data);
return 1;
}
n = ngx_read_file(&file, buf, NGX_INT64_LEN + 2, 0);
if (ngx_close_file(file.fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", file.name.data);
}
if (n == NGX_ERROR) {
return 1;
}
while (n-- && (buf[n] == CR || buf[n] == LF)) { /* void */ }
pid = ngx_atoi(buf, ++n);
if (pid == NGX_ERROR) {
ngx_log_error(NGX_LOG_ERR, cycle->log, 0,
"invalid PID number \"%*s\" in \"%s\"",
n, buf, file.name.data);
return 1;
}
return ngx_os_signal_process(cycle, sig, pid);
}
ngx_int_t ngx_http_shmtest_init_process(ngx_cycle_t *cycle)
{
shmtest_main_conf_t* conf = (shmtest_main_conf_t*)ngx_get_conf(cycle->conf_ctx, ngx_http_shmtest_module);
if(conf == NULL){
NLOG_INFO("conf is null!");
return 0;
}
printf("process [%d] inited!\n", ngx_getpid());
//多进程并发测试
int i;
int64_t ret=0;
for(i=0;i<10000;i++){
ngx_str_t key = ngx_string("test");
ngx_shmap_inc_int(conf->shmap, &key, 1, 0, &ret);
}
printf("process [%d] init ok! ret=%lld\n", ngx_getpid(), (long long)ret);
return 0;
}
static void
ngx_rtmp_auto_push_exit_process(ngx_cycle_t *cycle)
{
#if (NGX_HAVE_UNIX_DOMAIN)
ngx_rtmp_auto_push_conf_t *apcf;
u_char path[NGX_MAX_PATH];
apcf = (ngx_rtmp_auto_push_conf_t *) ngx_get_conf(cycle->conf_ctx,
ngx_rtmp_auto_push_module);
if (apcf->auto_push == 0) {
return;
}
*ngx_snprintf(path, sizeof(path),
"%V/" NGX_RTMP_AUTO_PUSH_SOCKNAME ".%i",
&apcf->socket_dir, ngx_process_slot)
= 0;
ngx_delete_file(path);
#endif
}
static void
ngx_console_init(ngx_cycle_t *cycle)
{
ngx_core_conf_t *ccf;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ccf->daemon) {
if (FreeConsole() == 0) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"FreeConsole() failed");
}
return;
}
if (SetConsoleCtrlHandler(ngx_console_handler, 1) == 0) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"SetConsoleCtrlHandler() failed");
}
}
//检查是否已经有该name的ngx_thread_pool_t，有则直接返回，没有则创建并添加到ngx_thread_pool_conf_t中
ngx_thread_pool_t *
ngx_thread_pool_add(ngx_conf_t *cf, ngx_str_t *name)
{
ngx_thread_pool_t *tp, **tpp;
ngx_thread_pool_conf_t *tcf;
if (name == NULL) {
name = &ngx_thread_pool_default;
}
//检查该名字的线程池是否已经存在，存在则直接返回以前的线程池ngx_thread_pool_t，没有返回NULL
tp = ngx_thread_pool_get(cf->cycle, name);
if (tp) {
return tp;
}
//创建新的ngx_thread_pool_t
tp = ngx_pcalloc(cf->pool, sizeof(ngx_thread_pool_t));
if (tp == NULL) {
return NULL;
}
tp->name = *name;
tp->file = cf->conf_file->file.name.data;
tp->line = cf->conf_file->line;
tcf = (ngx_thread_pool_conf_t *) ngx_get_conf(cf->cycle->conf_ctx,
ngx_thread_pool_module);
tpp = ngx_array_push(&tcf->pools);
if (tpp == NULL) {
return NULL;
}
*tpp = tp;
return tp;
}
void
ngx_show_dso_directives(ngx_conf_t *cf)
{
ngx_str_t name;
ngx_uint_t i;
ngx_module_t *module;
ngx_command_t *cmd;
ngx_dso_module_t *dm;
ngx_dso_conf_ctx_t *ctx;
ctx = (ngx_dso_conf_ctx_t *) ngx_get_conf(cf->cycle->conf_ctx,
ngx_dso_module);
if (ctx == NULL || ctx->modules == NULL) {
return;
}
dm = ctx->modules->elts;
for (i = 0; i < ctx->modules->nelts; i++) {
if (dm[i].name.len == 0) {
continue;
}
name = dm[i].name;
module = dm[i].module;
ngx_log_stderr(0, "%V (shared):", &name);
cmd = module->commands;
if(cmd == NULL) {
continue;
}
for ( /* void */ ; cmd->name.len; cmd++) {
ngx_log_stderr(0, " %V", &cmd->name);
}
}
}
static ngx_int_t
ngx_lua_http_btt_module_init(ngx_cycle_t *cycle)
{
ngx_lua_conf_t *lcf;
ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0,
"lua http btt module init");
lcf = (ngx_lua_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_lua_module);
lua_getglobal(lcf->l, NGX_LUA_TABLE);
lua_getfield(lcf->l, -1, NGX_LUA_HTTP_TABLE);
lua_createtable(lcf->l, 0, 1);
lua_pushcfunction(lcf->l, ngx_lua_http_btt_announce);
lua_setfield(lcf->l, -2, "announce");
lua_setfield(lcf->l, -2, "btt");
lua_pop(lcf->l, 2);
return NGX_OK;
}
static ngx_int_t
ngx_http_groonga_init_process(ngx_cycle_t *cycle)
{
grn_rc rc;
ngx_http_conf_ctx_t *http_conf;
ngx_http_groonga_database_callback_data_t data;
rc = grn_init();
if (rc != GRN_SUCCESS) {
return NGX_ERROR;
}
http_conf =
(ngx_http_conf_ctx_t *)ngx_get_conf(cycle->conf_ctx, ngx_http_module);
data.log = cycle->log;
data.pool = cycle->pool;
data.rc = NGX_OK;
ngx_http_groonga_each_loc_conf(http_conf,
ngx_http_groonga_open_database_callback,
&data);
return data.rc;
}
static ngx_int_t
ngx_zeromq_process_init(ngx_cycle_t *cycle)
{
ngx_zeromq_conf_t *zcf;
zcf = (ngx_zeromq_conf_t *) ngx_get_conf(cycle->conf_ctx,
ngx_zeromq_module);
if (ngx_zeromq_used) {
ngx_zeromq_ctx = zmq_ctx_new();
if (ngx_zeromq_ctx == NULL) {
ngx_zeromq_log_error(cycle->log, "zmq_ctx_new()");
return NGX_ERROR;
}
if (zmq_ctx_set(ngx_zeromq_ctx, ZMQ_IO_THREADS, zcf->threads) == -1) {
ngx_zeromq_log_error(cycle->log, "zmq_ctx_set(ZMQ_IO_THREADS)");
}
}
return NGX_OK;
}
static void
ngx_process_init(ngx_cycle_t *cycle)
{
ngx_err_t err;
ngx_core_conf_t *ccf;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ngx_init_threads(ngx_threads_n, ccf->thread_stack_size, cycle)
!= NGX_OK)
{
/* fatal */
exit(2);
}
err = ngx_thread_key_create(&ngx_core_tls_key);
if (err != 0) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, err,
ngx_thread_key_create_n " failed");
/* fatal */
exit(2);
}
}
static void
ngx_thread_pool_exit_worker(ngx_cycle_t *cycle)
{
ngx_uint_t i;
ngx_thread_pool_t **tpp;
ngx_thread_pool_conf_t *tcf;
if (ngx_process != NGX_PROCESS_WORKER
&& ngx_process != NGX_PROCESS_SINGLE)
{
return;
}
tcf = (ngx_thread_pool_conf_t *) ngx_get_conf(cycle->conf_ctx,
ngx_thread_pool_module);
if (tcf == NULL)
{
return;
}
tpp = tcf->pools.elts;
for (i = 0; i < tcf->pools.nelts; i++)
{
ngx_thread_pool_destroy(tpp[i]);
}
}
static ngx_int_t
ngx_http_groonga_init_process(ngx_cycle_t *cycle)
{
grn_rc rc;
ngx_http_conf_ctx_t *http_conf;
ngx_http_groonga_database_callback_data_t data;
grn_thread_set_get_limit_func(ngx_http_groonga_get_thread_limit, NULL);
#ifdef NGX_HTTP_GROONGA_LOG_PATH
grn_default_logger_set_path(NGX_HTTP_GROONGA_LOG_PATH);
#endif
rc = grn_init();
if (rc != GRN_SUCCESS) {
return NGX_ERROR;
}
grn_set_segv_handler();
rc = grn_ctx_init(context, GRN_NO_FLAGS);
if (rc != GRN_SUCCESS) {
return NGX_ERROR;
}
http_conf =
(ngx_http_conf_ctx_t *)ngx_get_conf(cycle->conf_ctx, ngx_http_module);
data.log = cycle->log;
data.pool = cycle->pool;
data.rc = NGX_OK;
ngx_http_groonga_each_loc_conf(http_conf,
ngx_http_groonga_open_database_callback,
&data);
return data.rc;
}
static ngx_int_t
ngx_squ_tcp_request_module_init(ngx_cycle_t *cycle)
{
int n;
SQRESULT rc;
ngx_squ_conf_t *scf;
ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0,
"squ tcp request module init");
scf = (ngx_squ_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_squ_module);
sq_pushroottable(scf->v);
sq_pushstring(scf->v, NGX_SQU_TABLE, sizeof(NGX_SQU_TABLE) - 1);
rc = sq_get(scf->v, -2);
sq_pushstring(scf->v, NGX_SQU_TCP_TABLE, sizeof(NGX_SQU_TCP_TABLE) - 1);
rc = sq_get(scf->v, -2);
n = sizeof(ngx_squ_tcp_request_methods) / sizeof(SQRegFunction) - 1;
sq_pushstring(scf->v, "request", sizeof("request") - 1);
sq_newtableex(scf->v, n);
for (n = 0; ngx_squ_tcp_request_methods[n].name != NULL; n++) {
sq_pushstring(scf->v, ngx_squ_tcp_request_methods[n].name, -1);
sq_newclosure(scf->v, ngx_squ_tcp_request_methods[n].f, 0);
rc = sq_newslot(scf->v, -3, SQFalse);
}
rc = sq_newslot(scf->v, -3, SQFalse);
sq_pop(scf->v, 3);
return NGX_OK;
}
ngx_pid_t
ngx_exec_new_binary(ngx_cycle_t *cycle, char *const *argv)
{
char **env, *var;
u_char *p;
ngx_uint_t i, n;
ngx_pid_t pid;
ngx_exec_ctx_t ctx;
ngx_core_conf_t *ccf;
ngx_listening_t *ls;
ngx_memzero(&ctx, sizeof(ngx_exec_ctx_t));
ctx.path = argv[0];
ctx.name = "new binary process";
ctx.argv = argv;
n = 2;
env = ngx_set_environment(cycle, &n);
if (env == NULL) {
return NGX_INVALID_PID;
}
var = ngx_alloc(sizeof(NGINX_VAR)
+ cycle->listening.nelts * (NGX_INT32_LEN + 1) + 2,
cycle->log);
p = ngx_cpymem(var, NGINX_VAR "=", sizeof(NGINX_VAR));
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
p = ngx_sprintf(p, "%ud;", ls[i].fd);
}
*p = '\0';
env[n++] = var;
#if (NGX_SETPROCTITLE_USES_ENV)
/* allocate the spare 300 bytes for the new binary process title */
env[n++] = "SPARE=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
#endif
env[n] = NULL;
#if (NGX_DEBUG)
{
char **e;
for (e = env; *e; e++) {
ngx_log_debug1(NGX_LOG_DEBUG_CORE, cycle->log, 0, "env: %s", *e);
}
}
#endif
ctx.envp = (char *const *) env;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ngx_rename_file(ccf->pid.data, ccf->oldpid.data) != NGX_OK) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
ngx_rename_file_n " %s to %s failed "
"before executing new binary process \"%s\"",
ccf->pid.data, ccf->oldpid.data, argv[0]);
ngx_free(env);
ngx_free(var);
return NGX_INVALID_PID;
}
pid = ngx_execute(cycle, &ctx);
if (pid == NGX_INVALID_PID) {
if (ngx_rename_file(ccf->oldpid.data, ccf->pid.data) != NGX_OK) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
ngx_rename_file_n " %s back to %s failed after "
"the try to execute the new binary process \"%s\"",
ccf->oldpid.data, ccf->pid.data, argv[0]);
}
}
ngx_free(env);
ngx_free(var);
return pid;
}
//1.时间、正则、错误日志、ssl等初始化
//2.读入命令行参数
//3.OS相关初始化
//4.读入并解析配置
//5.核心模块初始化
//6.创建各种临时文件和目录
//7.创建共享内存
//8.打开listen的端口
//9.所有模块初始化
//10.启动worker进程
int ngx_cdecl
main(int argc, char *const *argv)
{
ngx_int_t i;
ngx_log_t *log;
ngx_cycle_t *cycle, init_cycle;
ngx_core_conf_t *ccf;
#if (NGX_FREEBSD)
ngx_debug_init();
#endif
if (ngx_strerror_init() != NGX_OK) {
return 1;
}
//获取参数和配置参数，比如命令是nginx -v 那么ngx_show_version就设置为1
if (ngx_get_options(argc, argv) != NGX_OK) {
return 1;
}
if (ngx_show_version) {
ngx_write_stderr("nginx version: " NGINX_VER NGX_LINEFEED);
if (ngx_show_help) {
ngx_write_stderr(
"Usage: nginx [-?hvVtq] [-s signal] [-c filename] "
"[-p prefix] [-g directives]" NGX_LINEFEED
NGX_LINEFEED
"Options:" NGX_LINEFEED
" -?,-h : this help" NGX_LINEFEED
" -v : show version and exit" NGX_LINEFEED
" -V : show version and configure options then exit"
NGX_LINEFEED
" -t : test configuration and exit" NGX_LINEFEED
" -q : suppress non-error messages "
"during configuration testing" NGX_LINEFEED
" -s signal : send signal to a master process: "
"stop, quit, reopen, reload" NGX_LINEFEED
#ifdef NGX_PREFIX
" -p prefix : set prefix path (default: "
NGX_PREFIX ")" NGX_LINEFEED
#else
" -p prefix : set prefix path (default: NONE)" NGX_LINEFEED
#endif
" -c filename : set configuration file (default: "
NGX_CONF_PATH ")" NGX_LINEFEED
" -g directives : set global directives out of configuration "
"file" NGX_LINEFEED NGX_LINEFEED
);
}
if (ngx_show_configure) {
ngx_write_stderr(
#ifdef NGX_COMPILER
"built by " NGX_COMPILER NGX_LINEFEED
#endif
#if (NGX_SSL)
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
"TLS SNI support enabled" NGX_LINEFEED
#else
"TLS SNI support disabled" NGX_LINEFEED
#endif
#endif
"configure arguments:" NGX_CONFIGURE NGX_LINEFEED);
}
if (!ngx_test_config) {
return 0;
}
}
/* TODO */ ngx_max_sockets = -1;
//初始化nginx环境的当前时间
ngx_time_init();
#if (NGX_PCRE)
ngx_regex_init();
#endif
//master pid， 获取当前进程ID
ngx_pid = ngx_getpid();
// 初始化日志，如打开日志文件
log = ngx_log_init(ngx_prefix);
if (log == NULL) {
return 1;
}
/* STUB */
#if (NGX_OPENSSL)
ngx_ssl_init(log); //是否开启了ssl，如果开启在这里进行初始化
#endif
/*
* init_cycle->log is required for signal handlers and
* ngx_process_options()
*/
ngx_memzero(&init_cycle, sizeof(ngx_cycle_t));
init_cycle.log = log;
ngx_cycle = &init_cycle;
// 为cycle创建一个1024B的内存池
init_cycle.pool = ngx_create_pool(1024, log);
if (init_cycle.pool == NULL) {
return 1;
}
// 保存参数到全局变量中
if (ngx_save_argv(&init_cycle, argc, argv) != NGX_OK) {
return 1;
}
// 初始化init_cycle中的一些如: conf_file，prefix，conf_prefix等字段
if (ngx_process_options(&init_cycle) != NGX_OK) {
return 1;
}
// 初始化系统相关变量，如内存页面大小ngx_pagesize,ngx_cacheline_size,最大连接数ngx_max_sockets等
if (ngx_os_init(log) != NGX_OK) { // 这个ngx_os_init在不同操作系统调用不同的函数
return 1;
}
/*
* ngx_crc32_table_init() requires ngx_cacheline_size set in ngx_os_init()
*/
// 初始化CRC表，提高效率，以后就不用计算了，直接用
if (ngx_crc32_table_init() != NGX_OK) {
return 1;
}
// 继承sockets,继承来的socket将会放到init_cycle的listening数组
if (ngx_add_inherited_sockets(&init_cycle) != NGX_OK) {
return 1;
}
// 计算模块个数，并且设置各个模块顺序（索引）
ngx_max_module = 0;
for (i = 0; ngx_modules[i]; i++) { // 这里面的ngx_modules会有非常多的模块，[ngx_core_module,ngx_errlog_module,ngx_conf_moduel]
ngx_modules[i]->index = ngx_max_module++;
}
// 对ngx_cycle结构进行初始化,这里是nginx启动核心之处！
cycle = ngx_init_cycle(&init_cycle);
if (cycle == NULL) {
if (ngx_test_config) {
ngx_log_stderr(0, "configuration file %s test failed",
init_cycle.conf_file.data);
}
return 1;
}
if (ngx_test_config) {
if (!ngx_quiet_mode) {
ngx_log_stderr(0, "configuration file %s test is successful",
cycle->conf_file.data);
}
return 0;
}
// 检查是否有设置信号处理，如有，进入ngx_signal_process处理
if (ngx_signal) {
return ngx_signal_process(cycle, ngx_signal);
}
ngx_os_status(cycle->log);
ngx_cycle = cycle;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ccf->master && ngx_process == NGX_PROCESS_SINGLE) {
ngx_process = NGX_PROCESS_MASTER;
}
#if !(NGX_WIN32)
if (ngx_init_signals(cycle->log) != NGX_OK) {
return 1;
}
if (!ngx_inherited && ccf->daemon) {
if (ngx_daemon(cycle->log) != NGX_OK) { //如果是daemon模式，本进程变为守护进程
return 1;
}
ngx_daemonized = 1;
}
if (ngx_inherited) {
ngx_daemonized = 1;
}
#endif
// 创建进程记录文件
if (ngx_create_pidfile(&ccf->pid, cycle->log) != NGX_OK) {
return 1;
}
if (cycle->log->file->fd != ngx_stderr) {
if (ngx_set_stderr(cycle->log->file->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
ngx_set_stderr_n " failed");
return 1;
}
}
if (log->file->fd != ngx_stderr) {
if (ngx_close_file(log->file->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
ngx_close_file_n " built-in log failed");
}
}
ngx_use_stderr = 0;
if (ngx_process == NGX_PROCESS_SINGLE) {
ngx_single_process_cycle(cycle); //单进程
} else {
ngx_master_process_cycle(cycle); //多进程，master进程进入这个，这个函数在不同操作系统有不同实现。
}
return 0;
}
ngx_cycle_t *
ngx_init_cycle(ngx_cycle_t *old_cycle)
{
void *rv;
char **senv, **env;
ngx_uint_t i, n;
ngx_log_t *log;
ngx_time_t *tp;
ngx_conf_t conf;
ngx_pool_t *pool;
ngx_cycle_t *cycle, **old;
ngx_shm_zone_t *shm_zone, *oshm_zone;
ngx_list_part_t *part, *opart;
ngx_open_file_t *file;
ngx_listening_t *ls, *nls;
ngx_core_conf_t *ccf, *old_ccf;
ngx_core_module_t *module;
char hostname[NGX_MAXHOSTNAMELEN];
ngx_timezone_update();
/* force localtime update with a new timezone */
tp = ngx_timeofday();
tp->sec = 0;
ngx_time_update();
log = old_cycle->log;
pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (pool == NULL) {
return NULL;
}
pool->log = log;
cycle = ngx_pcalloc(pool, sizeof(ngx_cycle_t));
if (cycle == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->pool = pool;
cycle->log = log;
cycle->old_cycle = old_cycle;
cycle->conf_prefix.len = old_cycle->conf_prefix.len;
cycle->conf_prefix.data = ngx_pstrdup(pool, &old_cycle->conf_prefix);
if (cycle->conf_prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->prefix.len = old_cycle->prefix.len;
cycle->prefix.data = ngx_pstrdup(pool, &old_cycle->prefix);
if (cycle->prefix.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->conf_file.len = old_cycle->conf_file.len;
cycle->conf_file.data = ngx_pnalloc(pool, old_cycle->conf_file.len + 1);
if (cycle->conf_file.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_cpystrn(cycle->conf_file.data, old_cycle->conf_file.data,
old_cycle->conf_file.len + 1);
cycle->conf_param.len = old_cycle->conf_param.len;
cycle->conf_param.data = ngx_pstrdup(pool, &old_cycle->conf_param);
if (cycle->conf_param.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
n = old_cycle->paths.nelts ? old_cycle->paths.nelts : 10;
cycle->paths.elts = ngx_pcalloc(pool, n * sizeof(ngx_path_t *));
if (cycle->paths.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->paths.nelts = 0;
cycle->paths.size = sizeof(ngx_path_t *);
cycle->paths.nalloc = n;
cycle->paths.pool = pool;
if (old_cycle->open_files.part.nelts) {
n = old_cycle->open_files.part.nelts;
for (part = old_cycle->open_files.part.next; part; part = part->next) {
n += part->nelts;
}
} else {
n = 20;
}
if (ngx_list_init(&cycle->open_files, pool, n, sizeof(ngx_open_file_t))
!= NGX_OK)
{
ngx_destroy_pool(pool);
return NULL;
}
if (old_cycle->shared_memory.part.nelts) {
n = old_cycle->shared_memory.part.nelts;
for (part = old_cycle->shared_memory.part.next; part; part = part->next)
{
n += part->nelts;
}
} else {
n = 1;
}
if (ngx_list_init(&cycle->shared_memory, pool, n, sizeof(ngx_shm_zone_t))
!= NGX_OK)
{
ngx_destroy_pool(pool);
return NULL;
}
n = old_cycle->listening.nelts ? old_cycle->listening.nelts : 10;
cycle->listening.elts = ngx_pcalloc(pool, n * sizeof(ngx_listening_t));
if (cycle->listening.elts == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->listening.nelts = 0;
cycle->listening.size = sizeof(ngx_listening_t);
cycle->listening.nalloc = n;
cycle->listening.pool = pool;
ngx_queue_init(&cycle->reusable_connections_queue);
cycle->conf_ctx = ngx_pcalloc(pool, ngx_max_module * sizeof(void *));
if (cycle->conf_ctx == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
if (gethostname(hostname, NGX_MAXHOSTNAMELEN) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "gethostname() failed");
ngx_destroy_pool(pool);
return NULL;
}
/* on Linux gethostname() silently truncates name that does not fit */
hostname[NGX_MAXHOSTNAMELEN - 1] = '\0';
cycle->hostname.len = ngx_strlen(hostname);
cycle->hostname.data = ngx_pnalloc(pool, cycle->hostname.len);
if (cycle->hostname.data == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
ngx_strlow(cycle->hostname.data, (u_char *) hostname, cycle->hostname.len);
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) {
continue;
}
module = ngx_modules[i]->ctx;
if (module->create_conf) {
rv = module->create_conf(cycle);
if (rv == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
cycle->conf_ctx[ngx_modules[i]->index] = rv;
}
}
senv = environ;
ngx_memzero(&conf, sizeof(ngx_conf_t));
/* STUB: init array ? */
conf.args = ngx_array_create(pool, 10, sizeof(ngx_str_t));
if (conf.args == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.temp_pool = ngx_create_pool(NGX_CYCLE_POOL_SIZE, log);
if (conf.temp_pool == NULL) {
ngx_destroy_pool(pool);
return NULL;
}
conf.ctx = cycle->conf_ctx;
conf.cycle = cycle;
conf.pool = pool;
conf.log = log;
conf.module_type = NGX_CORE_MODULE;
conf.cmd_type = NGX_MAIN_CONF;
#if 0
log->log_level = NGX_LOG_DEBUG_ALL;
#endif
if (ngx_conf_param(&conf) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
if (ngx_conf_parse(&conf, &cycle->conf_file) != NGX_CONF_OK) {
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
if (ngx_test_config && !ngx_quiet_mode) {
ngx_log_stderr(0, "the configuration file %s syntax is ok",
cycle->conf_file.data);
}
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->type != NGX_CORE_MODULE) {
continue;
}
module = ngx_modules[i]->ctx;
if (module->init_conf) {
if (module->init_conf(cycle, cycle->conf_ctx[ngx_modules[i]->index])
== NGX_CONF_ERROR)
{
environ = senv;
ngx_destroy_cycle_pools(&conf);
return NULL;
}
}
}
if (ngx_process == NGX_PROCESS_SIGNALLER) {
return cycle;
}
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ngx_test_config) {
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
} else if (!ngx_is_init_cycle(old_cycle)) {
/*
* we do not create the pid file in the first ngx_init_cycle() call
* because we need to write the demonized process pid
*/
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (ccf->pid.len != old_ccf->pid.len
|| ngx_strcmp(ccf->pid.data, old_ccf->pid.data) != 0)
{
/* new pid file name */
if (ngx_create_pidfile(&ccf->pid, log) != NGX_OK) {
goto failed;
}
ngx_delete_pidfile(old_cycle);
}
}
if (ngx_test_lockfile(cycle->lock_file.data, log) != NGX_OK) {
goto failed;
}
if (ngx_create_paths(cycle, ccf->user) != NGX_OK) {
goto failed;
}
if (ngx_log_open_default(cycle) != NGX_OK) {
goto failed;
}
/* open the new files */
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].name.len == 0) {
continue;
}
file[i].fd = ngx_open_file(file[i].name.data,
NGX_FILE_APPEND,
NGX_FILE_CREATE_OR_OPEN,
NGX_FILE_DEFAULT_ACCESS);
ngx_log_debug3(NGX_LOG_DEBUG_CORE, log, 0,
"log: %p %d \"%s\"",
&file[i], file[i].fd, file[i].name.data);
if (file[i].fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_open_file_n " \"%s\" failed",
file[i].name.data);
goto failed;
}
#if !(NGX_WIN32)
if (fcntl(file[i].fd, F_SETFD, FD_CLOEXEC) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
"fcntl(FD_CLOEXEC) \"%s\" failed",
file[i].name.data);
goto failed;
}
#endif
}
cycle->log = &cycle->new_log;
pool->log = &cycle->new_log;
/* create shared memory */
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
i = 0;
}
if (shm_zone[i].shm.size == 0) {
ngx_log_error(NGX_LOG_EMERG, log, 0,
"zero size shared memory zone \"%V\"",
&shm_zone[i].shm.name);
goto failed;
}
shm_zone[i].shm.log = cycle->log;
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (n = 0; /* void */ ; n++) {
if (n >= opart->nelts) {
if (opart->next == NULL) {
break;
}
opart = opart->next;
oshm_zone = opart->elts;
n = 0;
}
if (shm_zone[i].shm.name.len != oshm_zone[n].shm.name.len) {
continue;
}
if (ngx_strncmp(shm_zone[i].shm.name.data,
oshm_zone[n].shm.name.data,
shm_zone[i].shm.name.len)
!= 0)
{
continue;
}
if (shm_zone[i].tag == oshm_zone[n].tag
&& shm_zone[i].shm.size == oshm_zone[n].shm.size)
{
shm_zone[i].shm.addr = oshm_zone[n].shm.addr;
if (shm_zone[i].init(&shm_zone[i], oshm_zone[n].data)
!= NGX_OK)
{
goto failed;
}
goto shm_zone_found;
}
ngx_shm_free(&oshm_zone[n].shm);
break;
}
if (ngx_shm_alloc(&shm_zone[i].shm) != NGX_OK) {
goto failed;
}
if (ngx_init_zone_pool(cycle, &shm_zone[i]) != NGX_OK) {
goto failed;
}
if (shm_zone[i].init(&shm_zone[i], NULL) != NGX_OK) {
goto failed;
}
shm_zone_found:
continue;
}
/* handle the listening sockets */
if (old_cycle->listening.nelts) {
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
ls[i].remain = 0;
}
nls = cycle->listening.elts;
for (n = 0; n < cycle->listening.nelts; n++) {
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].ignore) {
continue;
}
if (ngx_cmp_sockaddr(nls[n].sockaddr, ls[i].sockaddr) == NGX_OK)
{
nls[n].fd = ls[i].fd;
nls[n].previous = &ls[i];
ls[i].remain = 1;
if (ls[n].backlog != nls[i].backlog) {
nls[n].listen = 1;
}
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
/*
* FreeBSD, except the most recent versions,
* could not remove accept filter
*/
nls[n].deferred_accept = ls[i].deferred_accept;
if (ls[i].accept_filter && nls[n].accept_filter) {
if (ngx_strcmp(ls[i].accept_filter,
nls[n].accept_filter)
!= 0)
{
nls[n].delete_deferred = 1;
nls[n].add_deferred = 1;
}
} else if (ls[i].accept_filter) {
nls[n].delete_deferred = 1;
} else if (nls[n].accept_filter) {
nls[n].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[n].deferred_accept && !nls[n].deferred_accept) {
nls[n].delete_deferred = 1;
} else if (ls[i].deferred_accept != nls[n].deferred_accept)
{
nls[n].add_deferred = 1;
}
#endif
break;
}
}
if (nls[n].fd == (ngx_socket_t) -1) {
nls[n].open = 1;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
if (nls[n].accept_filter) {
nls[n].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (nls[n].deferred_accept) {
nls[n].add_deferred = 1;
}
#endif
}
}
} else {
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
ls[i].open = 1;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
if (ls[i].accept_filter) {
ls[i].add_deferred = 1;
}
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
if (ls[i].deferred_accept) {
ls[i].add_deferred = 1;
}
#endif
}
}
if (ngx_open_listening_sockets(cycle) != NGX_OK) {
goto failed;
}
if (!ngx_test_config) {
ngx_configure_listening_sockets(cycle);
}
/* commit the new cycle configuration */
if (!ngx_use_stderr) {
(void) ngx_log_redirect_stderr(cycle);
}
pool->log = cycle->log;
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->init_module) {
if (ngx_modules[i]->init_module(cycle) != NGX_OK) {
/* fatal */
exit(1);
}
}
}
/* close and delete stuff that lefts from an old cycle */
/* free the unnecessary shared memory */
opart = &old_cycle->shared_memory.part;
oshm_zone = opart->elts;
for (i = 0; /* void */ ; i++) {
if (i >= opart->nelts) {
if (opart->next == NULL) {
goto old_shm_zone_done;
}
opart = opart->next;
oshm_zone = opart->elts;
i = 0;
}
part = &cycle->shared_memory.part;
shm_zone = part->elts;
for (n = 0; /* void */ ; n++) {
if (n >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
shm_zone = part->elts;
n = 0;
}
if (oshm_zone[i].shm.name.len == shm_zone[n].shm.name.len
&& ngx_strncmp(oshm_zone[i].shm.name.data,
shm_zone[n].shm.name.data,
oshm_zone[i].shm.name.len)
== 0)
{
goto live_shm_zone;
}
}
ngx_shm_free(&oshm_zone[i].shm);
live_shm_zone:
continue;
}
old_shm_zone_done:
/* close the unnecessary listening sockets */
ls = old_cycle->listening.elts;
for (i = 0; i < old_cycle->listening.nelts; i++) {
if (ls[i].remain || ls[i].fd == (ngx_socket_t) -1) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " listening socket on %V failed",
&ls[i].addr_text);
}
#if (NGX_HAVE_UNIX_DOMAIN)
if (ls[i].sockaddr->sa_family == AF_UNIX) {
u_char *name;
name = ls[i].addr_text.data + sizeof("unix:") - 1;
ngx_log_error(NGX_LOG_WARN, cycle->log, 0,
"deleting socket %s", name);
if (ngx_delete_file(name) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
ngx_delete_file_n " %s failed", name);
}
}
#endif
}
/* close the unnecessary open files */
part = &old_cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
ngx_destroy_pool(conf.temp_pool);
if (ngx_process == NGX_PROCESS_MASTER || ngx_is_init_cycle(old_cycle)) {
/*
* perl_destruct() frees environ, if it is not the same as it was at
* perl_construct() time, therefore we save the previous cycle
* environment before ngx_conf_parse() where it will be changed.
*/
env = environ;
environ = senv;
ngx_destroy_pool(old_cycle->pool);
cycle->old_cycle = NULL;
environ = env;
return cycle;
}
if (ngx_temp_pool == NULL) {
ngx_temp_pool = ngx_create_pool(128, cycle->log);
if (ngx_temp_pool == NULL) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
"could not create ngx_temp_pool");
exit(1);
}
n = 10;
ngx_old_cycles.elts = ngx_pcalloc(ngx_temp_pool,
n * sizeof(ngx_cycle_t *));
if (ngx_old_cycles.elts == NULL) {
exit(1);
}
ngx_old_cycles.nelts = 0;
ngx_old_cycles.size = sizeof(ngx_cycle_t *);
ngx_old_cycles.nalloc = n;
ngx_old_cycles.pool = ngx_temp_pool;
ngx_cleaner_event.handler = ngx_clean_old_cycles;
ngx_cleaner_event.log = cycle->log;
ngx_cleaner_event.data = &dumb;
dumb.fd = (ngx_socket_t) -1;
}
ngx_temp_pool->log = cycle->log;
old = ngx_array_push(&ngx_old_cycles);
if (old == NULL) {
exit(1);
}
*old = old_cycle;
if (!ngx_cleaner_event.timer_set) {
ngx_add_timer(&ngx_cleaner_event, 30000);
ngx_cleaner_event.timer_set = 1;
}
return cycle;
failed:
if (!ngx_is_init_cycle(old_cycle)) {
old_ccf = (ngx_core_conf_t *) ngx_get_conf(old_cycle->conf_ctx,
ngx_core_module);
if (old_ccf->environment) {
environ = old_ccf->environment;
}
}
/* rollback the new cycle configuration */
part = &cycle->open_files.part;
file = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
file = part->elts;
i = 0;
}
if (file[i].fd == NGX_INVALID_FILE || file[i].fd == ngx_stderr) {
continue;
}
if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
ngx_close_file_n " \"%s\" failed",
file[i].name.data);
}
}
if (ngx_test_config) {
ngx_destroy_cycle_pools(&conf);
return NULL;
}
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
if (ls[i].fd == (ngx_socket_t) -1 || !ls[i].open) {
continue;
}
if (ngx_close_socket(ls[i].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
ngx_close_socket_n " %V failed",
&ls[i].addr_text);
}
}
ngx_destroy_cycle_pools(&conf);
return NULL;
}
int ngx_cdecl
main(int argc, char *const *argv)
{
ngx_int_t i;
ngx_log_t *log;
ngx_cycle_t *cycle, init_cycle;
ngx_core_conf_t *ccf;
#if !(NGX_WIN32)
struct rlimit rlmt;
#endif
if (ngx_get_options(argc, argv) != NGX_OK) {
return 1;
}
if (ngx_show_version) {
ngx_log_stderr(0, "nginx version: " NGINX_VER);
if (ngx_show_help) {
ngx_log_stderr(0,
"Usage: nginx [-?hvVt] [-s signal] [-c filename] "
"[-p prefix] [-g directives]" CRLF CRLF
"Options:" CRLF
" -?,-h : this help" CRLF
" -v : show version and exit" CRLF
" -V : show version and configure options then exit"
CRLF
" -t : test configuration and exit" CRLF
" -s signal : send signal to a master process: "
"stop, quit, reopen, reload" CRLF
#ifdef NGX_PREFIX
" -p prefix : set prefix path (default: "
NGX_PREFIX ")" CRLF
#else
" -p prefix : set prefix path (default: NONE)" CRLF
#endif
" -c filename : set configuration file (default: "
NGX_CONF_PATH ")" CRLF
" -g directives : set global directives out of configuration "
"file" CRLF
);
}
if (ngx_show_configure) {
#ifdef NGX_COMPILER
ngx_log_stderr(0, "built by " NGX_COMPILER);
#endif
#if (NGX_SSL)
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
ngx_log_stderr(0, "TLS SNI support enabled");
#else
ngx_log_stderr(0, "TLS SNI support disabled");
#endif
#endif
ngx_log_stderr(0, "configure arguments:" NGX_CONFIGURE);
}
if (!ngx_test_config) {
return 0;
}
}
#if (NGX_FREEBSD)
ngx_debug_init();
#endif
/* TODO */ ngx_max_sockets = -1;
ngx_time_init();
#if (NGX_PCRE)
ngx_regex_init();
#endif
ngx_pid = ngx_getpid();
log = ngx_log_init(ngx_prefix);
if (log == NULL) {
return 1;
}
/* STUB */
#if (NGX_OPENSSL)
ngx_ssl_init(log);
#endif
/*
* init_cycle->log is required for signal handlers and
* ngx_process_options()
*/
ngx_memzero(&init_cycle, sizeof(ngx_cycle_t));
init_cycle.log = log;
ngx_cycle = &init_cycle;
init_cycle.pool = ngx_create_pool(1024, log);
if (init_cycle.pool == NULL) {
return 1;
}
if (ngx_save_argv(&init_cycle, argc, argv) != NGX_OK) {
return 1;
}
if (ngx_process_options(&init_cycle) != NGX_OK) {
return 1;
}
if (ngx_os_init(log) != NGX_OK) {
return 1;
}
/*
* ngx_crc32_table_init() requires ngx_cacheline_size set in ngx_os_init()
*/
if (ngx_crc32_table_init() != NGX_OK) {
return 1;
}
if (ngx_add_inherited_sockets(&init_cycle) != NGX_OK) {
return 1;
}
ngx_max_module = 0;
for (i = 0; ngx_modules[i]; i++) {
ngx_modules[i]->index = ngx_max_module++;
}
cycle = ngx_init_cycle(&init_cycle);
if (cycle == NULL) {
if (ngx_test_config) {
ngx_log_stderr(0, "configuration file %s test failed",
init_cycle.conf_file.data);
}
return 1;
}
if (ngx_test_config) {
ngx_log_stderr(0, "configuration file %s test is successful",
cycle->conf_file.data);
return 0;
}
if (ngx_signal) {
return ngx_signal_process(cycle, ngx_signal);
}
ngx_os_status(cycle->log);
ngx_cycle = cycle;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ccf->master && ngx_process == NGX_PROCESS_SINGLE) {
ngx_process = NGX_PROCESS_MASTER;
}
#if !(NGX_WIN32)
if (geteuid() == 0) {
if (ccf->rlimit_nofile != NGX_CONF_UNSET) {
rlmt.rlim_cur = (rlim_t) ccf->rlimit_nofile;
rlmt.rlim_max = (rlim_t) ccf->rlimit_nofile;
if (setrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"setrlimit(RLIMIT_NOFILE, %i) failed", ccf->rlimit_nofile);
}
}
if (ccf->rlimit_core != NGX_CONF_UNSET_SIZE) {
rlmt.rlim_cur = (rlim_t) ccf->rlimit_core;
rlmt.rlim_max = (rlim_t) ccf->rlimit_core;
if (setrlimit(RLIMIT_CORE, &rlmt) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"setrlimit(RLIMIT_CORE, %i) failed", ccf->rlimit_core);
}
}
#ifdef RLIMIT_SIGPENDING
if (ccf->rlimit_sigpending != NGX_CONF_UNSET) {
rlmt.rlim_cur = (rlim_t) ccf->rlimit_sigpending;
rlmt.rlim_max = (rlim_t) ccf->rlimit_sigpending;
if (setrlimit(RLIMIT_SIGPENDING, &rlmt) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"setrlimit(RLIMIT_SIGPENDING, %i) failed", ccf->rlimit_sigpending);
}
}
#endif
if (setgid(ccf->group) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"setgid(%d) failed", ccf->group);
/* fatal */
exit(2);
}
if (initgroups(ccf->username, ccf->group) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"initgroups(%s, %d) failed", ccf->username, ccf->group);
}
if (setuid(ccf->user) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"setuid(%d) failed", ccf->user);
/* fatal */
exit(2);
}
}
if (ngx_init_signals(cycle->log) != NGX_OK) {
return 1;
}
if (!ngx_inherited && ccf->daemon) {
if (ngx_daemon(cycle->log) != NGX_OK) {
return 1;
}
ngx_daemonized = 1;
}
#endif
if (ngx_create_pidfile(&ccf->pid, cycle->log) != NGX_OK) {
return 1;
}
if (cycle->log->file->fd != ngx_stderr) {
if (ngx_set_stderr(cycle->log->file->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
ngx_set_stderr_n " failed");
return 1;
}
}
if (log->file->fd != ngx_stderr) {
if (ngx_close_file(log->file->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
ngx_close_file_n " built-in log failed");
}
}
ngx_use_stderr = 0;
if (ngx_process == NGX_PROCESS_SINGLE) {
ngx_single_process_cycle(cycle);
} else {
ngx_master_process_cycle(cycle);
}
return 0;
}
int ngx_cdecl
main(int argc, char *const *argv)
{
ngx_int_t i;
ngx_log_t *log;
ngx_cycle_t *cycle, init_cycle;
ngx_core_conf_t *ccf;
ngx_debug_init();
if (ngx_strerror_init() != NGX_OK) {
return 1;
}
if (ngx_get_options(argc, argv) != NGX_OK) {
return 1;
}
if (ngx_show_version) {
ngx_write_stderr("nginx version: " NGINX_VER NGX_LINEFEED);
if (ngx_show_help) {
ngx_write_stderr(
"Usage: nginx [-?hvVtq] [-s signal] [-c filename] "
"[-p prefix] [-g directives]" NGX_LINEFEED
NGX_LINEFEED
"Options:" NGX_LINEFEED
" -?,-h : this help" NGX_LINEFEED
" -v : show version and exit" NGX_LINEFEED
" -V : show version and configure options then exit"
NGX_LINEFEED
" -t : test configuration and exit" NGX_LINEFEED
" -q : suppress non-error messages "
"during configuration testing" NGX_LINEFEED
" -s signal : send signal to a master process: "
"stop, quit, reopen, reload" NGX_LINEFEED
#ifdef NGX_PREFIX
" -p prefix : set prefix path (default: "
NGX_PREFIX ")" NGX_LINEFEED
#else
" -p prefix : set prefix path (default: NONE)" NGX_LINEFEED
#endif
" -c filename : set configuration file (default: "
NGX_CONF_PATH ")" NGX_LINEFEED
" -g directives : set global directives out of configuration "
"file" NGX_LINEFEED NGX_LINEFEED
);
}
if (ngx_show_configure) {
ngx_write_stderr(
#ifdef NGX_COMPILER
"built by " NGX_COMPILER NGX_LINEFEED
#endif
#if (NGX_SSL)
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
"TLS SNI support enabled" NGX_LINEFEED
#else
"TLS SNI support disabled" NGX_LINEFEED
#endif
#endif
"configure arguments:" NGX_CONFIGURE NGX_LINEFEED);
}
if (!ngx_test_config) {
return 0;
}
}
/* TODO */ ngx_max_sockets = -1;
ngx_time_init();
#if (NGX_PCRE)
ngx_regex_init();
#endif
ngx_pid = ngx_getpid();
log = ngx_log_init(ngx_prefix);
if (log == NULL) {
return 1;
}
/* STUB */
#if (NGX_OPENSSL)
ngx_ssl_init(log);
#endif
/*
* init_cycle->log is required for signal handlers and
* ngx_process_options()
*/
ngx_memzero(&init_cycle, sizeof(ngx_cycle_t));
init_cycle.log = log;
ngx_cycle = &init_cycle;
init_cycle.pool = ngx_create_pool(1024, log);
if (init_cycle.pool == NULL) {
return 1;
}
if (ngx_save_argv(&init_cycle, argc, argv) != NGX_OK) {
return 1;
}
if (ngx_process_options(&init_cycle) != NGX_OK) {
return 1;
}
if (ngx_os_init(log) != NGX_OK) {
return 1;
}
/*
* ngx_crc32_table_init() requires ngx_cacheline_size set in ngx_os_init()
*/
if (ngx_crc32_table_init() != NGX_OK) {
return 1;
}
if (ngx_add_inherited_sockets(&init_cycle) != NGX_OK) {
return 1;
}
ngx_max_module = 0;
for (i = 0; ngx_modules[i]; i++) {
ngx_modules[i]->index = ngx_max_module++;
}
cycle = ngx_init_cycle(&init_cycle);
if (cycle == NULL) {
if (ngx_test_config) {
ngx_log_stderr(0, "configuration file %s test failed",
init_cycle.conf_file.data);
}
return 1;
}
if (ngx_test_config) {
if (!ngx_quiet_mode) {
ngx_log_stderr(0, "configuration file %s test is successful",
cycle->conf_file.data);
}
return 0;
}
if (ngx_signal) {
return ngx_signal_process(cycle, ngx_signal);
}
ngx_os_status(cycle->log);
ngx_cycle = cycle;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ccf->master && ngx_process == NGX_PROCESS_SINGLE) {
ngx_process = NGX_PROCESS_MASTER;
}
#if !(NGX_WIN32)
if (ngx_init_signals(cycle->log) != NGX_OK) {
return 1;
}
if (!ngx_inherited && ccf->daemon) {
if (ngx_daemon(cycle->log) != NGX_OK) {
return 1;
}
ngx_daemonized = 1;
}
if (ngx_inherited) {
ngx_daemonized = 1;
}
#endif
if (ngx_create_pidfile(&ccf->pid, cycle->log) != NGX_OK) {
return 1;
}
if (cycle->log->file->fd != ngx_stderr) {
if (ngx_set_stderr(cycle->log->file->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
ngx_set_stderr_n " failed");
return 1;
}
}
if (log->file->fd != ngx_stderr) {
if (ngx_close_file(log->file->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
ngx_close_file_n " built-in log failed");
}
}
ngx_use_stderr = 0;
if (ngx_process == NGX_PROCESS_SINGLE) {
ngx_single_process_cycle(cycle);
} else {
ngx_master_process_cycle(cycle);
}
return 0;
}
static int
ngx_lua_http_btt_announce(lua_State *l)
{
size_t size;
u_char *p, *last, *buf, ip[NGX_INET_ADDRSTRLEN];
uint32_t n;
ngx_int_t rc;
ngx_btt_ctx_t *ctx;
ngx_btt_conf_t *bcf;
ngx_lua_thread_t *thr;
ngx_lua_http_ctx_t *hctx;
ngx_http_request_t *r;
ngx_btt_peer_info_t *pi;
thr = ngx_lua_thread(l);
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, thr->log, 0, "lua http btt announce");
ctx = ngx_pcalloc(thr->pool, sizeof(ngx_btt_ctx_t));
if (ctx == NULL) {
lua_pushboolean(l, 0);
return 1;
}
ctx->pool = thr->pool;
ctx->log = thr->log;
hctx = thr->module_ctx;
r = hctx->r;
if (ngx_lua_http_btt_parse_args(r, ctx) != NGX_OK) {
lua_pushboolean(l, 0);
return 1;
}
/* Checking the value of the uri arguments */
if (ngx_lua_http_btt_check_args(r, ctx) != NGX_OK) {
lua_pushboolean(l, 0);
return 1;
}
bcf = (ngx_btt_conf_t *) ngx_get_conf(ngx_cycle->conf_ctx,
ngx_lua_btt_module);
/* Insert or update peer information in peer list */
/* TODO: Checking ctx->event */
rc = ngx_btt_update_peer(bcf, ctx);
if (rc != NGX_OK) {
lua_pushboolean(l, 0);
return 1;
}
/* Querying the peer list */
if (ctx->event != NGX_BTT_EVENT_STOPPED) {
ctx->peers = ngx_palloc(thr->pool,
sizeof(ngx_btt_peer_info_t) * ctx->numwant);
if (ctx->peers == NULL) {
lua_pushboolean(l, 0);
return 1;
}
rc = ngx_btt_query_peers(bcf, ctx);
if (rc != NGX_OK) {
lua_pushboolean(l, 0);
return 1;
}
}
/* Calculating the size of the response */
/* TODO:
*
* 8:completei2e
* 10:downloadedi4e
* 10:incompletei1e
*
* 12:min intervali811e
*/
size = sizeof("d8:intervalie5:peerse") - 1 + NGX_TIME_T_LEN;
if (ctx->compact) {
size += NGX_INT_T_LEN + 1 + 6 * ctx->peers_n;
} else {
size += sizeof("le") - 1;
if (!ctx->no_peer_id) {
size += (sizeof("7:peer_id20:") - 1 + 20) * ctx->peers_n;
}
size += (sizeof("d2:ip4:portiee") - 1
+ NGX_INT_T_LEN + 1 + NGX_INET_ADDRSTRLEN + NGX_INT_T_LEN)
* ctx->peers_n;
}
buf = ngx_palloc(thr->pool, size);
if (buf == NULL) {
lua_pushboolean(l, 0);
return 1;
}
p = buf;
last = p + size;
/* Building the response */
p = ngx_slprintf(p, last, "d8:intervali%Te5:peers", bcf->interval);
if (ctx->compact) {
p = ngx_slprintf(p, last, "%uz:", 6 * ctx->peers_n);
} else {
*p++ = 'l';
}
for (n = 0; n < ctx->peers_n; n++) {
pi = &ctx->peers[n];
if (ctx->compact) {
p = ngx_cpymem(p, &pi->external_ip, sizeof(pi->external_ip));
pi->internal_port = htons(pi->internal_port);
p = ngx_cpymem(p, &pi->internal_port, sizeof(pi->internal_port));
} else {
*p++ = 'd';
if (!ctx->no_peer_id) {
p = ngx_slprintf(p, last, "7:peer_id20:%*s",
sizeof(pi->peer_id), pi->peer_id);
}
size = ngx_inet_ntop(AF_INET, &pi->external_ip, ip, sizeof(ip));
p = ngx_slprintf(p, last, "2:ip%uz:%*s4:porti%uDe",
size, size, ip, (uint32_t) pi->internal_port);
*p++ = 'e';
}
}
if (!ctx->compact) {
*p++ = 'e';
}
*p++ = 'e';
ngx_lua_output(thr, buf, p - buf);
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"lua http btt announce response:%N%*s", p - buf, buf);
lua_pushboolean(l, 1);
return 1;
}
static void
ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data)
{
ngx_int_t worker = (intptr_t) data;
ngx_uint_t i;
ngx_connection_t *c;
ngx_process = NGX_PROCESS_WORKER;
ngx_worker_process_init(cycle, worker);
ngx_setproctitle("worker process");
#if (NGX_THREADS)
{
ngx_int_t n;
ngx_err_t err;
ngx_core_conf_t *ccf;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (ngx_threads_n) {
if (ngx_init_threads(ngx_threads_n, ccf->thread_stack_size, cycle)
== NGX_ERROR)
{
/* fatal */
exit(2);
}
err = ngx_thread_key_create(&ngx_core_tls_key);
if (err != 0) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, err,
ngx_thread_key_create_n " failed");
/* fatal */
exit(2);
}
for (n = 0; n < ngx_threads_n; n++) {
ngx_threads[n].cv = ngx_cond_init(cycle->log);
if (ngx_threads[n].cv == NULL) {
/* fatal */
exit(2);
}
if (ngx_create_thread((ngx_tid_t *) &ngx_threads[n].tid,
ngx_worker_thread_cycle,
(void *) &ngx_threads[n], cycle->log)
!= 0)
{
/* fatal */
exit(2);
}
}
}
}
#endif
for ( ;; ) {
if (ngx_exiting) {
c = cycle->connections;
for (i = 0; i < cycle->connection_n; i++) {
/* THREAD: lock */
if (c[i].fd != -1 && c[i].idle) {
c[i].close = 1;
c[i].read->handler(c[i].read);
}
}
if (ngx_event_timer_rbtree.root == ngx_event_timer_rbtree.sentinel)
{
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting");
ngx_worker_process_exit(cycle);
}
}
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "worker cycle");
ngx_process_events_and_timers(cycle);
if (ngx_terminate) {
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting");
ngx_worker_process_exit(cycle);
}
if (ngx_quit) {
ngx_quit = 0;
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0,
"gracefully shutting down");
ngx_setproctitle("worker process is shutting down");
if (!ngx_exiting) {
ngx_close_listening_sockets(cycle);
ngx_exiting = 1;
}
}
if (ngx_reopen) {
ngx_reopen = 0;
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs");
ngx_reopen_files(cycle, -1);
}
}
}
static ngx_int_t
ngx_regex_module_init(ngx_cycle_t *cycle)
{
int opt;
const char *errstr;
ngx_uint_t i;
ngx_list_part_t *part;
ngx_regex_elt_t *elts;
opt = 0;
#if (NGX_HAVE_PCRE_JIT)
{
ngx_regex_conf_t *rcf;
ngx_pool_cleanup_t *cln;
rcf = (ngx_regex_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_regex_module);
if (rcf->pcre_jit) {
opt = PCRE_STUDY_JIT_COMPILE;
/*
* The PCRE JIT compiler uses mmap for its executable codes, so we
* have to explicitly call the pcre_free_study() function to free
* this memory.
*/
cln = ngx_pool_cleanup_add(cycle->pool, 0);
if (cln == NULL) {
return NGX_ERROR;
}
cln->handler = ngx_pcre_free_studies;
cln->data = ngx_pcre_studies;
}
}
#endif
ngx_regex_malloc_init(cycle->pool);
part = &ngx_pcre_studies->part;
elts = part->elts;
for (i = 0 ; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
elts = part->elts;
i = 0;
}
elts[i].regex->extra = pcre_study(elts[i].regex->code, opt, &errstr);
if (errstr != NULL) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
"pcre_study() failed: %s in \"%s\"",
errstr, elts[i].name);
}
#if (NGX_HAVE_PCRE_JIT)
if (opt & PCRE_STUDY_JIT_COMPILE) {
int jit, n;
jit = 0;
n = pcre_fullinfo(elts[i].regex->code, elts[i].regex->extra,
PCRE_INFO_JIT, &jit);
if (n != 0 || jit != 1) {
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"JIT compiler does not support pattern: \"%s\"",
elts[i].name);
}
}
#endif
}
ngx_regex_malloc_done();
ngx_pcre_studies = NULL;
return NGX_OK;
}
static void
ngx_worker_process_init(ngx_cycle_t *cycle, ngx_int_t worker)
{
sigset_t set;
uint64_t cpu_affinity;
ngx_int_t n;
ngx_uint_t i;
struct rlimit rlmt;
ngx_core_conf_t *ccf;
ngx_listening_t *ls;
if (ngx_set_environment(cycle, NULL) == NULL) {
/* fatal */
exit(2);
}
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (worker >= 0 && ccf->priority != 0) {
if (setpriority(PRIO_PROCESS, 0, ccf->priority) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setpriority(%d) failed", ccf->priority);
}
}
if (ccf->rlimit_nofile != NGX_CONF_UNSET) {
rlmt.rlim_cur = (rlim_t) ccf->rlimit_nofile;
rlmt.rlim_max = (rlim_t) ccf->rlimit_nofile;
if (setrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setrlimit(RLIMIT_NOFILE, %i) failed",
ccf->rlimit_nofile);
}
}
if (ccf->rlimit_core != NGX_CONF_UNSET) {
rlmt.rlim_cur = (rlim_t) ccf->rlimit_core;
rlmt.rlim_max = (rlim_t) ccf->rlimit_core;
if (setrlimit(RLIMIT_CORE, &rlmt) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setrlimit(RLIMIT_CORE, %O) failed",
ccf->rlimit_core);
}
}
#ifdef RLIMIT_SIGPENDING
if (ccf->rlimit_sigpending != NGX_CONF_UNSET) {
rlmt.rlim_cur = (rlim_t) ccf->rlimit_sigpending;
rlmt.rlim_max = (rlim_t) ccf->rlimit_sigpending;
if (setrlimit(RLIMIT_SIGPENDING, &rlmt) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setrlimit(RLIMIT_SIGPENDING, %i) failed",
ccf->rlimit_sigpending);
}
}
#endif
if (geteuid() == 0) {
if (setgid(ccf->group) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"setgid(%d) failed", ccf->group);
/* fatal */
exit(2);
}
if (initgroups(ccf->username, ccf->group) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"initgroups(%s, %d) failed",
ccf->username, ccf->group);
}
if (setuid(ccf->user) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"setuid(%d) failed", ccf->user);
/* fatal */
exit(2);
}
}
if (worker >= 0) {
cpu_affinity = ngx_get_cpu_affinity(worker);
if (cpu_affinity) {
ngx_setaffinity(cpu_affinity, cycle->log);
}
}
#if (NGX_HAVE_PR_SET_DUMPABLE)
/* allow coredump after setuid() in Linux 2.4.x */
if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"prctl(PR_SET_DUMPABLE) failed");
}
#endif
if (ccf->working_directory.len) {
if (chdir((char *) ccf->working_directory.data) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"chdir(\"%s\") failed", ccf->working_directory.data);
/* fatal */
exit(2);
}
}
sigemptyset(&set);
if (sigprocmask(SIG_SETMASK, &set, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"sigprocmask() failed");
}
srandom((ngx_pid << 16) ^ ngx_time());
/*
* disable deleting previous events for the listening sockets because
* in the worker processes there are no events at all at this point
*/
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
ls[i].previous = NULL;
}
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->init_process) {
if (ngx_modules[i]->init_process(cycle) == NGX_ERROR) {
/* fatal */
exit(2);
}
}
}
for (n = 0; n < ngx_last_process; n++) {
if (ngx_processes[n].pid == -1) {
continue;
}
if (n == ngx_process_slot) {
continue;
}
if (ngx_processes[n].channel[1] == -1) {
continue;
}
if (close(ngx_processes[n].channel[1]) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"close() channel failed");
}
}
if (close(ngx_processes[ngx_process_slot].channel[0]) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"close() channel failed");
}
#if 0
ngx_last_process = 0;
#endif
if (ngx_add_channel_event(cycle, ngx_channel, NGX_READ_EVENT,
ngx_channel_handler)
== NGX_ERROR)
{
/* fatal */
exit(2);
}
}
void
ngx_master_process_cycle(ngx_cycle_t *cycle)
{
char *title;
u_char *p;
size_t size;
ngx_int_t i;
ngx_uint_t n, sigio;
sigset_t set;
struct itimerval itv;
ngx_uint_t live;
ngx_msec_t delay;
ngx_listening_t *ls;
ngx_core_conf_t *ccf;
sigemptyset(&set);
sigaddset(&set, SIGCHLD);
sigaddset(&set, SIGALRM);
sigaddset(&set, SIGIO);
sigaddset(&set, SIGINT);
sigaddset(&set, ngx_signal_value(NGX_RECONFIGURE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_REOPEN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_NOACCEPT_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_TERMINATE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_CHANGEBIN_SIGNAL));
if (sigprocmask(SIG_BLOCK, &set, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"sigprocmask() failed");
}
sigemptyset(&set);
size = sizeof(master_process);
for (i = 0; i < ngx_argc; i++) {
size += ngx_strlen(ngx_argv[i]) + 1;
}
title = ngx_pnalloc(cycle->pool, size);
p = ngx_cpymem(title, master_process, sizeof(master_process) - 1);
for (i = 0; i < ngx_argc; i++) {
*p++ = ' ';
p = ngx_cpystrn(p, (u_char *) ngx_argv[i], size);
}
ngx_setproctitle(title);
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
ngx_new_binary = 0;
delay = 0;
sigio = 0;
live = 1;
for ( ;; ) {
if (delay) {
if (ngx_sigalrm) {
sigio = 0;
delay *= 2;
ngx_sigalrm = 0;
}
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"termination cycle: %d", delay);
itv.it_interval.tv_sec = 0;
itv.it_interval.tv_usec = 0;
itv.it_value.tv_sec = delay / 1000;
itv.it_value.tv_usec = (delay % 1000 ) * 1000;
if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setitimer() failed");
}
}
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "sigsuspend");
sigsuspend(&set);
ngx_time_update();
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"wake up, sigio %i", sigio);
if (ngx_reap) {
ngx_reap = 0;
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "reap children");
live = ngx_reap_children(cycle);
}
if (!live && (ngx_terminate || ngx_quit)) {
ngx_master_process_exit(cycle);
}
if (ngx_terminate) {
if (delay == 0) {
delay = 50;
}
if (sigio) {
sigio--;
continue;
}
sigio = ccf->worker_processes + 2 /* cache processes */;
if (delay > 1000) {
ngx_signal_worker_processes(cycle, SIGKILL);
} else {
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_TERMINATE_SIGNAL));
}
continue;
}
if (ngx_quit) {
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
ls = cycle->listening.elts;
for (n = 0; n < cycle->listening.nelts; n++) {
if (ngx_close_socket(ls[n].fd) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
ngx_close_socket_n " %V failed",
&ls[n].addr_text);
}
}
cycle->listening.nelts = 0;
continue;
}
if (ngx_reconfigure) {
ngx_reconfigure = 0;
if (ngx_new_binary) {
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
ngx_noaccepting = 0;
continue;
}
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reconfiguring");
cycle = ngx_init_cycle(cycle);
if (cycle == NULL) {
cycle = (ngx_cycle_t *) ngx_cycle;
continue;
}
ngx_cycle = cycle;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx,
ngx_core_module);
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_JUST_RESPAWN);
ngx_start_cache_manager_processes(cycle, 1);
/* allow new processes to start */
ngx_msleep(100);
live = 1;
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
}
if (ngx_restart) {
ngx_restart = 0;
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
live = 1;
}
if (ngx_reopen) {
ngx_reopen = 0;
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs");
ngx_reopen_files(cycle, ccf->user);
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_REOPEN_SIGNAL));
}
if (ngx_change_binary) {
ngx_change_binary = 0;
ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "changing binary");
ngx_new_binary = ngx_exec_new_binary(cycle, ngx_argv);
}
if (ngx_noaccept) {
ngx_noaccept = 0;
ngx_noaccepting = 1;
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
}
}
}