mirror of
https://github.com/nginx/nginx.git
synced 2024-12-20 14:13:33 -06:00
nginx-0.0.1-2004-01-14-00:33:59 import
This commit is contained in:
Igor Sysoev
parent
49783fc42e
commit
80340f0152
105
src/core/nginx.c
105
src/core/nginx.c
@ -16,6 +16,7 @@ typedef struct {
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typedef struct {
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ngx_file_t pid;
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char *name;
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char *const *argv;
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} ngx_master_ctx_t;
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@ -23,7 +24,7 @@ typedef struct {
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static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx);
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static void ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data);
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static ngx_int_t ngx_add_inherited_sockets(ngx_cycle_t *cycle, char **envp);
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static void ngx_exec_new_binary(ngx_cycle_t *cycle, char *const *argv);
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static ngx_pid_t ngx_exec_new_binary(ngx_cycle_t *cycle, char *const *argv);
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static ngx_int_t ngx_core_module_init(ngx_cycle_t *cycle);
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@ -75,8 +76,9 @@ uid_t user;
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u_int ngx_connection_counter;
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ngx_int_t ngx_process;
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ngx_int_t ngx_inherited;
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ngx_pid_t ngx_new_binary;
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ngx_int_t ngx_inherited;
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ngx_int_t ngx_signal;
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ngx_int_t ngx_reap;
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ngx_int_t ngx_terminate;
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@ -201,6 +203,7 @@ int main(int argc, char *const *argv, char **envp)
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len = ngx_snprintf(pid, /* STUB */ 10, PID_T_FMT, ngx_getpid());
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ngx_memzero(&ctx.pid, sizeof(ngx_file_t));
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ctx.pid.name = ngx_inherited ? ccf->newpid : ccf->pid;
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ctx.name = ccf->pid.data;
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ctx.pid.fd = ngx_open_file(ctx.pid.name.data, NGX_FILE_RDWR,
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NGX_FILE_CREATE_OR_OPEN);
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@ -230,13 +233,16 @@ int main(int argc, char *const *argv, char **envp)
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}
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/* TODO: broken single process */
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static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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{
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int signo;
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ngx_msec_t delay;
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struct timeval tv;
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ngx_uint_t i, live, mark;
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sigset_t set, wset;
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int signo;
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char *name;
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sigset_t set, wset;
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struct timeval tv;
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ngx_uint_t i, live, mark;
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ngx_msec_t delay;
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delay = 125;
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@ -257,6 +263,7 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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}
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ngx_signal = 0;
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ngx_new_binary = 0;
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signo = 0;
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mark = 1;
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@ -266,6 +273,7 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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if (ngx_process == NGX_PROCESS_MASTER) {
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ngx_spawn_process(cycle, ngx_worker_process_cycle, NULL,
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"worker process", NGX_PROCESS_RESPAWN);
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mark = 1;
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} else {
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ngx_init_temp_number();
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@ -280,7 +288,7 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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}
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}
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/* a cycle with the same configuration */
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/* a cycle with the same configuration because a new one is invalid */
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for ( ;; ) {
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@ -290,8 +298,8 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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if (ngx_process == NGX_PROCESS_MASTER) {
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if (signo) {
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ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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"signal cycle");
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ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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"signal cycle: %d, %d", signo, mark);
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if (sigprocmask(SIG_UNBLOCK, &set, NULL) == -1) {
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ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
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@ -330,14 +338,19 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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ngx_signal = 0;
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} else {
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ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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"sigsuspend");
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sigsuspend(&wset);
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ngx_gettimeofday(&tv);
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ngx_time_update(tv.tv_sec);
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ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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"wake up");
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}
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/* TODO: broken */
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} else if (ngx_process == NGX_PROCESS_SINGLE) {
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} else { /* NGX_PROCESS_SINGLE */
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ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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"worker cycle");
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@ -345,8 +358,12 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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}
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if (ngx_reap) {
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ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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"reap childs");
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live = 0;
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for (i = 0; i < ngx_last_process; i++) {
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if (ngx_processes[i].exiting
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&& !ngx_processes[i].exited)
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{
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@ -354,22 +371,33 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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continue;
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}
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if (i != --ngx_last_process) {
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ngx_processes[i--] =
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if (ngx_processes[i].exited) {
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if (ngx_processes[i].pid == ngx_new_binary) {
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ngx_new_binary = 0;
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}
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if (i != --ngx_last_process) {
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ngx_processes[i--] =
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ngx_processes[ngx_last_process];
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}
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}
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}
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if (!live) {
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if (ngx_terminate || ngx_quit) {
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if (ngx_delete_file(ctx->pid.name.data)
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== NGX_FILE_ERROR)
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{
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if (ngx_inherited && getppid() > 1) {
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name = ctx->pid.name.data;
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} else {
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name = ctx->name;
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}
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if (ngx_delete_file(name) == NGX_FILE_ERROR) {
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ngx_log_error(NGX_LOG_ALERT, cycle->log,
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ngx_errno,
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ngx_delete_file_n
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" \"%s\" failed",
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ctx->pid.name.data);
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" \"%s\" failed", name);
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}
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ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "exit");
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@ -377,6 +405,7 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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} else {
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signo = 0;
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mark = 0;
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}
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}
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}
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@ -386,14 +415,24 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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signo = SIGKILL;
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} else {
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signo = ngx_signal_value(NGX_TERMINATE_SIGNAL);
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if (mark == 0) {
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mark = 1;
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}
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}
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ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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"mark: %d", mark);
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} else if (ngx_quit) {
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signo = ngx_signal_value(NGX_SHUTDOWN_SIGNAL);
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if (mark == 0) {
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mark = 1;
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}
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} else {
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if (ngx_reap) {
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ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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"respawn processes");
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ngx_respawn_processes(cycle);
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}
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@ -408,7 +447,7 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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ngx_change_binary = 0;
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ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
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"changing binary");
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ngx_exec_new_binary(cycle, ctx->argv);
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ngx_new_binary = ngx_exec_new_binary(cycle, ctx->argv);
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}
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if (ngx_reconfigure) {
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@ -419,9 +458,12 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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}
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if (ngx_reopen) {
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mark = 1;
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ngx_reopen = 0;
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/* STUB */
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mark = 1;
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signo = ngx_signal_value(NGX_SHUTDOWN_SIGNAL);
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ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
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"reopening logs");
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ngx_reopen_files(cycle);
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@ -431,8 +473,17 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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if (signo) {
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if (mark == 1) {
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for (i = 0; i < ngx_last_process; i++) {
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ngx_log_debug1(NGX_LOG_DEBUG_EVENT,
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cycle->log, 0,
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"proc " PID_T_FMT,
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ngx_processes[i].pid);
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if (!ngx_processes[i].detached) {
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ngx_processes[i].signal = 1;
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ngx_log_debug1(NGX_LOG_DEBUG_EVENT,
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cycle->log, 0,
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"mark " PID_T_FMT,
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ngx_processes[i].pid);
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}
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}
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mark = -1;
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@ -446,6 +497,11 @@ static void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
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ngx_reap = 0;
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}
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/* STUB */
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if (ngx_reopen) {
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break;
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}
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if (ngx_reconfigure) {
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break;
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}
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@ -602,10 +658,11 @@ static ngx_int_t ngx_add_inherited_sockets(ngx_cycle_t *cycle, char **envp)
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}
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static void ngx_exec_new_binary(ngx_cycle_t *cycle, char *const *argv)
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static ngx_pid_t ngx_exec_new_binary(ngx_cycle_t *cycle, char *const *argv)
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{
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char *env[2], *var, *p;
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ngx_int_t i;
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ngx_pid_t pid;
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ngx_exec_ctx_t ctx;
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ngx_listening_t *ls;
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@ -628,9 +685,11 @@ static void ngx_exec_new_binary(ngx_cycle_t *cycle, char *const *argv)
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env[1] = NULL;
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ctx.envp = (char *const *) &env;
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ngx_exec(cycle, &ctx);
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pid = ngx_exec(cycle, &ctx);
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ngx_free(var);
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return pid;
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}
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@ -50,7 +50,9 @@ extern int ngx_inherited_nonblocking;
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extern ngx_int_t ngx_process;
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extern ngx_pid_t ngx_new_binary;
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extern ngx_int_t ngx_inherited;
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extern ngx_int_t ngx_signal;
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extern ngx_int_t ngx_reap;
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extern ngx_int_t ngx_quit;
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@ -42,6 +42,8 @@ ngx_signal_t signals[] = {
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"SIG" ngx_value(NGX_CHANGEBIN_SIGNAL),
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ngx_signal_handler },
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{ SIGINT, "SIGINT", ngx_signal_handler },
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{ SIGCHLD, "SIGCHLD", ngx_signal_handler },
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{ SIGPIPE, "SIGPIPE, SIG_IGN", SIG_IGN },
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@ -93,10 +95,12 @@ void ngx_signal_handler(int signo)
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{
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char *action;
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struct timeval tv;
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ngx_int_t ignore;
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ngx_err_t err;
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ngx_signal_t *sig;
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ngx_signal = 1;
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ignore = 0;
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err = ngx_errno;
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@ -138,11 +142,31 @@ void ngx_signal_handler(int signo)
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break;
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case ngx_signal_value(NGX_REOPEN_SIGNAL):
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ngx_reopen = 1;
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action = ", reopen logs";
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break;
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if (ngx_noaccept) {
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action = ", ignoring";
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} else {
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ngx_reopen = 1;
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action = ", reopen logs";
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break;
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}
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case ngx_signal_value(NGX_CHANGEBIN_SIGNAL):
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if ((ngx_inherited && getppid() > 1)
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|| (!ngx_inherited && ngx_new_binary > 0))
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{
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/*
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* Ignore the signal in the new binary if its parent is
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* not the init process, i.e. the old binary's process
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* is still running. Or ingore the signal in the old binary's
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* process if the new binary's process is already running.
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*/
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action = ", ignoring";
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ignore = 1;
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break;
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}
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ngx_change_binary = 1;
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action = ", changing binary";
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break;
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@ -189,6 +213,13 @@ void ngx_signal_handler(int signo)
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ngx_log_error(NGX_LOG_INFO, ngx_cycle->log, 0,
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"signal %d (%s) received%s", signo, sig->signame, action);
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if (ignore) {
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ngx_log_error(NGX_LOG_CRIT, ngx_cycle->log, 0,
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"the changing binary signal is ignored: "
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"you should shutdown or terminate "
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"before either old or new binary's process");
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}
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if (signo == SIGCHLD) {
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ngx_process_get_status();
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}
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@ -85,17 +85,10 @@ ngx_pid_t ngx_spawn_process(ngx_cycle_t *cycle,
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}
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ngx_int_t ngx_exec(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx)
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ngx_pid_t ngx_exec(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx)
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{
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if (ngx_spawn_process(cycle, ngx_exec_proc, ctx, ctx->name,
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NGX_PROCESS_DETACHED) == NGX_ERROR)
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{
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ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
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"can not spawn %s", ctx->name);
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return NGX_ERROR;
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}
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return NGX_OK;
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return ngx_spawn_process(cycle, ngx_exec_proc, ctx, ctx->name,
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NGX_PROCESS_DETACHED);
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}
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@ -154,6 +147,9 @@ void ngx_respawn_processes(ngx_cycle_t *cycle)
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ngx_uint_t i;
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for (i = 0; i < ngx_last_process; i++) {
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ngx_log_debug1(NGX_LOG_DEBUG_CORE, cycle->log, 0,
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"proc table " PID_T_FMT, ngx_processes[i].pid);
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if (ngx_processes[i].exiting || !ngx_processes[i].exited) {
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continue;
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}
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@ -46,7 +46,7 @@ typedef struct {
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ngx_pid_t ngx_spawn_process(ngx_cycle_t *cycle,
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ngx_spawn_proc_pt proc, void *data,
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char *name, ngx_int_t respawn);
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ngx_int_t ngx_exec(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx);
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ngx_pid_t ngx_exec(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx);
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void ngx_signal_processes(ngx_cycle_t *cycle, ngx_int_t signo);
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void ngx_respawn_processes(ngx_cycle_t *cycle);
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void ngx_process_get_status(void);
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