void input_start_stdin(int fd)
{
if (read_stream) {
return;
}
read_buffer = rbuffer_new(READ_BUFFER_SIZE);
read_stream = rstream_new(read_cb, read_buffer, NULL);
rstream_set_file(read_stream, fd);
rstream_start(read_stream);
}
// new a net pool
struct net_pool* net_new()
{
struct net_pool* np = (struct net_pool*)malloc(sizeof(struct net_pool));
// get the eventfd
np->eventfd = poll_create();
if(poll_invalid(np->eventfd))
{
log_error("epoll create failure\n");
return NULL;
}
np->eventn = 0;
np->eventindex = 0;
np->allocid = 0;
np->count = 0;
np->cap = DEFAULT_SOCKET;
// beforehand alloc an array as a container
np->ns = (struct net_socket**)malloc(np->cap * sizeof(struct net_socket*));
// initialize the elements of array: alloc memory
int i = 0;
for(; i < np->cap; ++i)
{
np->ns[i] = (struct net_socket*)malloc(sizeof(struct net_socket));
memset(np->ns[i], 0, sizeof(struct net_socket));
np->ns[i]->rdsz = MIN_READ_BUFFER;
np->ns[i]->wbuff = wbuffer_new();
np->ns[i]->rbuff = rbuffer_new();
}
np->ud = NULL;
// set signal to np
net_set_sighandler(np);
// np->prothandler = (map<int, PROTHANDLER>*)malloc(sizeof(map<int, PROTHANDLER>)) ;
// map is a type of class, use new, call structure function
np->prothandler = new map<int, PROTHANDLER>;
np->onlineconnidtocharid = new map<int, int>;
np->onlinecharidtoconnid = new map<int, int>;
np->serverid = -1;
return np;
}
// expand the capacity
static void net_expand(struct net_pool* np)
{
log_debug("net_expand ...\n");
int newcap = np->cap * 2;
// new array for saving net socket's information
struct net_socket** ns = (struct net_socket**)malloc(newcap * sizeof(struct net_socket*));
memset(ns, 0, newcap * sizeof(struct net_socket*));
int i = 0;
// transplant the old data to new container
for(; i < np->cap; ++i)
{
// in fact, np->ns[i]->id == i
// use %, incase of spilling
int nid = np->ns[i]->id % newcap;
if(ns[nid] != NULL)
{
log_error("new net_socket error : %d", i);
continue;
}
ns[nid] = np->ns[i];
}
// malloc new container's data
for(i = 0; i < newcap; ++i)
{
if(!ns[i])
{
ns[i] = (struct net_socket*)malloc(sizeof(struct net_socket));
memset(ns[i], 0, sizeof(struct net_socket));
ns[i]->rdsz = MIN_READ_BUFFER;
ns[i]->rbuff = rbuffer_new();
ns[i]->wbuff = wbuffer_new();
}
}
// free the old array
free(np->ns);
// set the new array
np->ns = ns;
// increse the cap
np->cap = newcap;
}
/// Tries to start a new job.
///
/// @param[out] status The job id if the job started successfully, 0 if the job
/// table is full, -1 if the program could not be executed.
/// @return The job pointer if the job started successfully, NULL otherwise
Job *job_start(JobOptions opts, int *status)
{
int i;
Job *job;
// Search for a free slot in the table
for (i = 0; i < MAX_RUNNING_JOBS; i++) {
if (table[i] == NULL) {
break;
}
}
if (i == MAX_RUNNING_JOBS) {
// No free slots
shell_free_argv(opts.argv);
*status = 0;
return NULL;
}
job = xmalloc(sizeof(Job));
// Initialize
job->id = i + 1;
*status = job->id;
job->status = -1;
job->refcount = 1;
job->stopped_time = 0;
job->term_sent = false;
job->in = NULL;
job->out = NULL;
job->err = NULL;
job->opts = opts;
job->closed = false;
process_init(job);
if (opts.writable) {
handle_set_job((uv_handle_t *)job->proc_stdin, job);
job->refcount++;
}
if (opts.stdout_cb) {
handle_set_job((uv_handle_t *)job->proc_stdout, job);
job->refcount++;
}
if (opts.stderr_cb) {
handle_set_job((uv_handle_t *)job->proc_stderr, job);
job->refcount++;
}
// Spawn the job
if (!process_spawn(job)) {
if (opts.writable) {
uv_close((uv_handle_t *)job->proc_stdin, close_cb);
}
if (opts.stdout_cb) {
uv_close((uv_handle_t *)job->proc_stdout, close_cb);
}
if (opts.stderr_cb) {
uv_close((uv_handle_t *)job->proc_stderr, close_cb);
}
process_close(job);
event_poll(0);
// Manually invoke the close_cb to free the job resources
*status = -1;
return NULL;
}
if (opts.writable) {
job->in = wstream_new(opts.maxmem);
wstream_set_stream(job->in, job->proc_stdin);
}
// Start the readable streams
if (opts.stdout_cb) {
job->out = rstream_new(read_cb, rbuffer_new(JOB_BUFFER_SIZE), job);
rstream_set_stream(job->out, job->proc_stdout);
rstream_start(job->out);
}
if (opts.stderr_cb) {
job->err = rstream_new(read_cb, rbuffer_new(JOB_BUFFER_SIZE), job);
rstream_set_stream(job->err, job->proc_stderr);
rstream_start(job->err);
}
// Save the job to the table
table[i] = job;
return job;
}
void input_init(void)
{
input_buffer = rbuffer_new(INPUT_BUFFER_SIZE + MAX_KEY_CODE_LEN);
}
/// Tries to start a new job.
///
/// @param argv Argument vector for the process. The first item is the
/// executable to run.
/// @param data Caller data that will be associated with the job
/// @param stdout_cb Callback that will be invoked when data is available
/// on stdout
/// @param stderr_cb Callback that will be invoked when data is available
/// on stderr
/// @param job_exit_cb Callback that will be invoked when the job exits
/// @param maxmem Maximum amount of memory used by the job WStream
/// @param[out] status The job id if the job started successfully, 0 if the job
/// table is full, -1 if the program could not be executed.
/// @return The job pointer if the job started successfully, NULL otherwise
Job *job_start(char **argv,
void *data,
rstream_cb stdout_cb,
rstream_cb stderr_cb,
job_exit_cb job_exit_cb,
size_t maxmem,
int *status)
{
int i;
Job *job;
// Search for a free slot in the table
for (i = 0; i < MAX_RUNNING_JOBS; i++) {
if (table[i] == NULL) {
break;
}
}
if (i == MAX_RUNNING_JOBS) {
// No free slots
*status = 0;
return NULL;
}
job = xmalloc(sizeof(Job));
// Initialize
job->id = i + 1;
*status = job->id;
job->status = -1;
job->pending_refs = 3;
job->pending_closes = 4;
job->data = data;
job->stdout_cb = stdout_cb;
job->stderr_cb = stderr_cb;
job->exit_cb = job_exit_cb;
job->stopped = false;
job->exit_timeout = EXIT_TIMEOUT;
job->proc_opts.file = argv[0];
job->proc_opts.args = argv;
job->proc_opts.stdio = job->stdio;
job->proc_opts.stdio_count = 3;
job->proc_opts.flags = UV_PROCESS_WINDOWS_HIDE;
job->proc_opts.exit_cb = exit_cb;
job->proc_opts.cwd = NULL;
job->proc_opts.env = NULL;
job->proc.data = NULL;
job->proc_stdin.data = NULL;
job->proc_stdout.data = NULL;
job->proc_stderr.data = NULL;
// Initialize the job std{in,out,err}
uv_pipe_init(uv_default_loop(), &job->proc_stdin, 0);
job->stdio[0].flags = UV_CREATE_PIPE | UV_READABLE_PIPE;
job->stdio[0].data.stream = (uv_stream_t *)&job->proc_stdin;
uv_pipe_init(uv_default_loop(), &job->proc_stdout, 0);
job->stdio[1].flags = UV_CREATE_PIPE | UV_WRITABLE_PIPE;
job->stdio[1].data.stream = (uv_stream_t *)&job->proc_stdout;
uv_pipe_init(uv_default_loop(), &job->proc_stderr, 0);
job->stdio[2].flags = UV_CREATE_PIPE | UV_WRITABLE_PIPE;
job->stdio[2].data.stream = (uv_stream_t *)&job->proc_stderr;
// Give all handles a reference to the job
handle_set_job((uv_handle_t *)&job->proc, job);
handle_set_job((uv_handle_t *)&job->proc_stdin, job);
handle_set_job((uv_handle_t *)&job->proc_stdout, job);
handle_set_job((uv_handle_t *)&job->proc_stderr, job);
// Spawn the job
if (uv_spawn(uv_default_loop(), &job->proc, &job->proc_opts) != 0) {
free_job(job);
*status = -1;
return NULL;
}
job->in = wstream_new(maxmem);
wstream_set_stream(job->in, (uv_stream_t *)&job->proc_stdin);
// Start the readable streams
job->out = rstream_new(read_cb, rbuffer_new(JOB_BUFFER_SIZE), job);
job->err = rstream_new(read_cb, rbuffer_new(JOB_BUFFER_SIZE), job);
rstream_set_stream(job->out, (uv_stream_t *)&job->proc_stdout);
rstream_set_stream(job->err, (uv_stream_t *)&job->proc_stderr);
rstream_start(job->out);
rstream_start(job->err);
// Save the job to the table
table[i] = job;
// Start polling job status if this is the first
if (job_count == 0) {
uv_prepare_start(&job_prepare, job_prepare_cb);
}
job_count++;
return job;
}