void vma_shmem_stats_close()
{
if (g_sh_mem_info.p_sh_stats && g_sh_mem_info.p_sh_stats != MAP_FAILED) {
__log_dbg("file '%s' fd %d shared memory at %p with %d max blocks\n", g_sh_mem_info.filename_sh_stats, g_sh_mem_info.fd_sh_stats, g_sh_mem_info.p_sh_stats, safe_mce_sys().stats_fd_num_max);
BULLSEYE_EXCLUDE_BLOCK_START
if (munmap(g_sh_mem_info.p_sh_stats, SHMEM_STATS_SIZE(safe_mce_sys().stats_fd_num_max)) != 0) {
vlog_printf(VLOG_ERROR, "%s: file [%s] fd [%d] error while unmap shared memory at [%p]\n", __func__, g_sh_mem_info.filename_sh_stats, g_sh_mem_info.fd_sh_stats, g_sh_mem_info.p_sh_stats);
}
BULLSEYE_EXCLUDE_BLOCK_END
g_sh_mem_info.p_sh_stats = MAP_FAILED;
if (g_sh_mem_info.fd_sh_stats)
close(g_sh_mem_info.fd_sh_stats);
if(!g_is_forked_child)
unlink(g_sh_mem_info.filename_sh_stats);
} else if (g_sh_mem_info.p_sh_stats != MAP_FAILED) {
void vma_shmem_stats_open(vlog_levels_t** p_p_vma_log_level, uint8_t** p_p_vma_log_details)
{
void *buf = NULL;
void *p_shmem = NULL;
int ret;
size_t shmem_size = 0;
mode_t saved_mode;
g_p_stats_data_reader = new stats_data_reader();
BULLSEYE_EXCLUDE_BLOCK_START
if (NULL == g_p_stats_data_reader) {
vlog_printf(VLOG_ERROR,"%s:%d: Can't allocate g_p_stats_data_reader \n", __func__, __LINE__);
goto shmem_error;
}
BULLSEYE_EXCLUDE_BLOCK_END
shmem_size = SHMEM_STATS_SIZE(safe_mce_sys().stats_fd_num_max);
buf = malloc(shmem_size);
if (buf == NULL)
goto shmem_error;
memset(buf, 0, shmem_size);
p_shmem = buf;
if (strlen(safe_mce_sys().stats_shmem_dirname) <= 0)
goto no_shmem;
g_sh_mem_info.filename_sh_stats[0] = '\0';
g_sh_mem_info.p_sh_stats = MAP_FAILED;
ret = snprintf(g_sh_mem_info.filename_sh_stats, sizeof(g_sh_mem_info.filename_sh_stats), "%s/vmastat.%d", safe_mce_sys().stats_shmem_dirname, getpid());
if (!((0 < ret) && (ret < (int)sizeof(g_sh_mem_info.filename_sh_stats)))) {
vlog_printf(VLOG_ERROR, "%s: Could not create file under %s %m\n", __func__, safe_mce_sys().stats_shmem_dirname, errno);
goto no_shmem;
}
saved_mode = umask(0);
g_sh_mem_info.fd_sh_stats = open(g_sh_mem_info.filename_sh_stats, O_CREAT|O_RDWR,
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
umask(saved_mode);
BULLSEYE_EXCLUDE_BLOCK_START
if (g_sh_mem_info.fd_sh_stats < 0) {
vlog_printf(VLOG_ERROR, "%s: Could not open %s %m\n", __func__, g_sh_mem_info.filename_sh_stats, errno);
goto no_shmem;
}
BULLSEYE_EXCLUDE_BLOCK_END
ret = write(g_sh_mem_info.fd_sh_stats, buf, shmem_size);
BULLSEYE_EXCLUDE_BLOCK_START
if (ret < 0) {
vlog_printf(VLOG_ERROR, "%s: Could not write to %s - %m\n", __func__, g_sh_mem_info.filename_sh_stats, errno);
goto no_shmem;
}
BULLSEYE_EXCLUDE_BLOCK_END
g_sh_mem_info.p_sh_stats = mmap(0, shmem_size, PROT_WRITE|PROT_READ, MAP_SHARED, g_sh_mem_info.fd_sh_stats, 0);
BULLSEYE_EXCLUDE_BLOCK_START
if (g_sh_mem_info.p_sh_stats == MAP_FAILED) {
vlog_printf(VLOG_ERROR, "%s: MAP_FAILED for %s - %m\n", __func__, g_sh_mem_info.filename_sh_stats);
goto no_shmem;
}
BULLSEYE_EXCLUDE_BLOCK_END
p_shmem = g_sh_mem_info.p_sh_stats;
free(buf);
buf = NULL;
goto success;
no_shmem:
if (g_sh_mem_info.p_sh_stats == MAP_FAILED) {
if (g_sh_mem_info.fd_sh_stats > 0) {
close(g_sh_mem_info.fd_sh_stats);
unlink(g_sh_mem_info.filename_sh_stats);
}
}
g_sh_mem_info.p_sh_stats = 0;
success:
MAP_SH_MEM(g_sh_mem, p_shmem);
write_version_details_to_shmem(&g_sh_mem->ver_info);
memcpy(g_sh_mem->stats_protocol_ver, STATS_PROTOCOL_VER, min(sizeof(g_sh_mem->stats_protocol_ver), sizeof(STATS_PROTOCOL_VER)));
g_sh_mem->max_skt_inst_num = safe_mce_sys().stats_fd_num_max;
g_sh_mem->reader_counter = 0;
__log_dbg("file '%s' fd %d shared memory at %p with %d max blocks\n", g_sh_mem_info.filename_sh_stats, g_sh_mem_info.fd_sh_stats, g_sh_mem_info.p_sh_stats, safe_mce_sys().stats_fd_num_max);
// Update the shmem initial log values
g_sh_mem->log_level = **p_p_vma_log_level;
g_sh_mem->log_details_level = **p_p_vma_log_details;
// Update the shmem with initial fd dump values
g_sh_mem->fd_dump = STATS_FD_STATISTICS_DISABLED;
g_sh_mem->fd_dump_log_level = STATS_FD_STATISTICS_LOG_LEVEL_DEFAULT;
// ReMap internal log level to ShMem area
*p_p_vma_log_level = &g_sh_mem->log_level;
*p_p_vma_log_details = &g_sh_mem->log_details_level;
g_p_stats_data_reader->register_to_timer();
return;
shmem_error:
BULLSEYE_EXCLUDE_BLOCK_START
g_sh_mem_info.fd_sh_stats = -1;
g_sh_mem_info.p_sh_stats = MAP_FAILED;
g_sh_mem = &g_local_sh_mem;
g_sh_mem->reset();
*p_p_vma_log_level = &g_sh_mem->log_level;
*p_p_vma_log_details = &g_sh_mem->log_details_level;
BULLSEYE_EXCLUDE_BLOCK_END
}
void vma_shmem_stats_open(uint8_t** p_p_vma_log_level, uint8_t** p_p_vma_log_details)
{
void* buf;
int ret;
size_t shmem_size = 0;
mode_t saved_mode;
g_p_stats_data_reader = new stats_data_reader();
BULLSEYE_EXCLUDE_BLOCK_START
if ( NULL == g_p_stats_data_reader ) {
vlog_printf(VLOG_ERROR,"%s:%d: Can't allocate g_p_stats_data_reader \n", __func__, __LINE__);
goto shmem_error;
}
BULLSEYE_EXCLUDE_BLOCK_END
g_sh_mem_info.filename_sh_stats[0] = '\0';
g_sh_mem_info.p_sh_stats = MAP_FAILED;
sprintf(g_sh_mem_info.filename_sh_stats, "/tmp/vmastat.%d", getpid());
saved_mode = umask(0);
g_sh_mem_info.fd_sh_stats = open(g_sh_mem_info.filename_sh_stats, O_CREAT|O_RDWR, S_IRWXU | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
umask(saved_mode);
BULLSEYE_EXCLUDE_BLOCK_START
if (g_sh_mem_info.fd_sh_stats < 0) {
vlog_printf(VLOG_ERROR, "%s: Could not open %s %m\n", __func__, g_sh_mem_info.filename_sh_stats, errno);
goto shmem_error;
}
BULLSEYE_EXCLUDE_BLOCK_END
shmem_size = SHMEM_STATS_SIZE(mce_sys.stats_fd_num_max);
buf = malloc(shmem_size);
memset(buf, 0, shmem_size);
ret = write(g_sh_mem_info.fd_sh_stats, buf, shmem_size);
free(buf);
BULLSEYE_EXCLUDE_BLOCK_START
if (ret < 0) {
vlog_printf(VLOG_ERROR, "%s: Could not write to %s - %m\n", __func__, g_sh_mem_info.filename_sh_stats, errno);
goto shmem_error;
}
BULLSEYE_EXCLUDE_BLOCK_END
g_sh_mem_info.p_sh_stats = mmap(0, shmem_size, PROT_WRITE|PROT_READ, MAP_SHARED, g_sh_mem_info.fd_sh_stats, 0);
BULLSEYE_EXCLUDE_BLOCK_START
if (g_sh_mem_info.p_sh_stats == MAP_FAILED) {
vlog_printf(VLOG_ERROR, "%s: MAP_FAILED for %s - %m\n", __func__, g_sh_mem_info.filename_sh_stats);
goto shmem_error;
}
BULLSEYE_EXCLUDE_BLOCK_END
MAP_SH_MEM(g_sh_mem, g_sh_mem_info.p_sh_stats);
write_version_details_to_shmem(&g_sh_mem->ver_info);
g_sh_mem->max_skt_inst_num = mce_sys.stats_fd_num_max;
g_sh_mem->reader_counter = 0;
vlog_printf(VLOG_DEBUG, "%s: file '%s' fd %d shared memory at %p with %d max blocks\n", __func__, g_sh_mem_info.filename_sh_stats, g_sh_mem_info.fd_sh_stats, g_sh_mem_info.p_sh_stats, mce_sys.stats_fd_num_max);
// Update the shmem initial log values
g_sh_mem->log_level = **p_p_vma_log_level;
g_sh_mem->log_details_level = **p_p_vma_log_details;
// ReMap internal log level to ShMem area
*p_p_vma_log_level = &g_sh_mem->log_level;
*p_p_vma_log_details = &g_sh_mem->log_details_level;
g_p_stats_data_reader->register_to_timer();
return;
shmem_error:
BULLSEYE_EXCLUDE_BLOCK_START
if (g_sh_mem_info.fd_sh_stats > 0) {
close(g_sh_mem_info.fd_sh_stats);
unlink(g_sh_mem_info.filename_sh_stats);
}
g_sh_mem_info.fd_sh_stats = -1;
g_sh_mem_info.p_sh_stats = MAP_FAILED;
g_sh_mem = &g_local_sh_mem;
memset((void*)g_sh_mem, 0, sizeof(sh_mem_t));
*p_p_vma_log_level = &g_sh_mem->log_level;
*p_p_vma_log_details = &g_sh_mem->log_details_level;
BULLSEYE_EXCLUDE_BLOCK_END
}
