summaryrefslogtreecommitdiffhomepage
path: root/src/nxt_master_process.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/nxt_master_process.c')
-rw-r--r--src/nxt_master_process.c480
1 files changed, 166 insertions, 314 deletions
diff --git a/src/nxt_master_process.c b/src/nxt_master_process.c
index 1e613b45..12c61d16 100644
--- a/src/nxt_master_process.c
+++ b/src/nxt_master_process.c
@@ -5,46 +5,39 @@
*/
#include <nxt_main.h>
-#include <nxt_cycle.h>
+#include <nxt_runtime.h>
#include <nxt_port.h>
#include <nxt_master_process.h>
static nxt_int_t nxt_master_process_port_create(nxt_task_t *task,
- nxt_cycle_t *cycle);
-static void nxt_master_process_title(void);
+ nxt_runtime_t *rt);
+static void nxt_master_process_title(nxt_task_t *task);
+static nxt_int_t nxt_master_start_controller_process(nxt_task_t *task,
+ nxt_runtime_t *rt);
+static nxt_int_t nxt_master_start_router_process(nxt_task_t *task,
+ nxt_runtime_t *rt);
static nxt_int_t nxt_master_start_worker_processes(nxt_task_t *task,
- nxt_cycle_t *cycle);
+ nxt_runtime_t *rt);
static nxt_int_t nxt_master_create_worker_process(nxt_task_t *task,
- nxt_cycle_t *cycle);
-static void nxt_master_stop_previous_worker_processes(nxt_task_t *task,
- void *obj, void *data);
-static void nxt_master_process_sighup_handler(nxt_task_t *task, void *obj,
- void *data);
-static void nxt_master_process_new_cycle(nxt_task_t *task, nxt_cycle_t *cycle);
+ nxt_runtime_t *rt, nxt_process_init_t *init);
static void nxt_master_process_sigterm_handler(nxt_task_t *task, void *obj,
void *data);
static void nxt_master_process_sigquit_handler(nxt_task_t *task, void *obj,
void *data);
static void nxt_master_process_sigusr1_handler(nxt_task_t *task, void *obj,
void *data);
-static void nxt_master_process_sigusr2_handler(nxt_task_t *task, void *obj,
- void *data);
-static char **nxt_master_process_upgrade_environment(nxt_cycle_t *cycle);
-static char **nxt_master_process_upgrade_environment_create(nxt_cycle_t *cycle);
static void nxt_master_process_sigchld_handler(nxt_task_t *task, void *obj,
void *data);
static void nxt_master_cleanup_worker_process(nxt_task_t *task, nxt_pid_t pid);
const nxt_sig_event_t nxt_master_process_signals[] = {
- nxt_event_signal(SIGHUP, nxt_master_process_sighup_handler),
nxt_event_signal(SIGINT, nxt_master_process_sigterm_handler),
nxt_event_signal(SIGQUIT, nxt_master_process_sigquit_handler),
nxt_event_signal(SIGTERM, nxt_master_process_sigterm_handler),
nxt_event_signal(SIGCHLD, nxt_master_process_sigchld_handler),
nxt_event_signal(SIGUSR1, nxt_master_process_sigusr1_handler),
- nxt_event_signal(SIGUSR2, nxt_master_process_sigusr2_handler),
nxt_event_signal_end,
};
@@ -54,27 +47,47 @@ static nxt_bool_t nxt_exiting;
nxt_int_t
nxt_master_process_start(nxt_thread_t *thr, nxt_task_t *task,
- nxt_cycle_t *cycle)
+ nxt_runtime_t *rt)
{
- cycle->type = NXT_PROCESS_MASTER;
+ nxt_int_t ret;
+
+ rt->type = NXT_PROCESS_MASTER;
- if (nxt_master_process_port_create(task, cycle) != NXT_OK) {
+ if (nxt_master_process_port_create(task, rt) != NXT_OK) {
return NXT_ERROR;
}
- nxt_master_process_title();
+ nxt_master_process_title(task);
+
+ ret = nxt_master_start_controller_process(task, rt);
+ if (ret != NXT_OK) {
+ return ret;
+ }
+
+ ret = nxt_master_start_router_process(task, rt);
+ if (ret != NXT_OK) {
+ return ret;
+ }
- return nxt_master_start_worker_processes(task, cycle);
+ return nxt_master_start_worker_processes(task, rt);
}
static nxt_int_t
-nxt_master_process_port_create(nxt_task_t *task, nxt_cycle_t *cycle)
+nxt_master_process_port_create(nxt_task_t *task, nxt_runtime_t *rt)
{
- nxt_int_t ret;
- nxt_port_t *port;
+ nxt_int_t ret;
+ nxt_port_t *port;
+ nxt_process_t *process;
- port = nxt_array_zero_add(cycle->ports);
+ process = nxt_runtime_new_process(rt);
+ if (nxt_slow_path(process == NULL)) {
+ return NXT_ERROR;
+ }
+
+ process->pid = nxt_pid;
+
+ port = nxt_array_zero_add(process->ports);
if (nxt_slow_path(port == NULL)) {
return NXT_ERROR;
}
@@ -98,7 +111,7 @@ nxt_master_process_port_create(nxt_task_t *task, nxt_cycle_t *cycle)
static void
-nxt_master_process_title(void)
+nxt_master_process_title(nxt_task_t *task)
{
u_char *p, *end;
nxt_uint_t i;
@@ -115,22 +128,75 @@ nxt_master_process_title(void)
*p = '\0';
- nxt_process_title((char *) title);
+ nxt_process_title(task, (char *) title);
}
static nxt_int_t
-nxt_master_start_worker_processes(nxt_task_t *task, nxt_cycle_t *cycle)
+nxt_master_start_controller_process(nxt_task_t *task, nxt_runtime_t *rt)
{
- nxt_int_t ret;
- nxt_uint_t n;
+ nxt_process_init_t *init;
- cycle->process_generation++;
+ init = nxt_mem_alloc(rt->mem_pool, sizeof(nxt_process_init_t));
+ if (nxt_slow_path(init == NULL)) {
+ return NXT_ERROR;
+ }
- n = cycle->worker_processes;
+ init->start = nxt_controller_start;
+ init->name = "controller process";
+ init->user_cred = &rt->user_cred;
+ init->port_handlers = nxt_worker_process_port_handlers;
+ init->signals = nxt_worker_process_signals;
+ init->type = NXT_PROCESS_CONTROLLER;
+
+ return nxt_master_create_worker_process(task, rt, init);
+}
+
+
+static nxt_int_t
+nxt_master_start_router_process(nxt_task_t *task, nxt_runtime_t *rt)
+{
+ nxt_process_init_t *init;
+
+ init = nxt_mem_alloc(rt->mem_pool, sizeof(nxt_process_init_t));
+ if (nxt_slow_path(init == NULL)) {
+ return NXT_ERROR;
+ }
+
+ init->start = nxt_router_start;
+ init->name = "router process";
+ init->user_cred = &rt->user_cred;
+ init->port_handlers = nxt_worker_process_port_handlers;
+ init->signals = nxt_worker_process_signals;
+ init->type = NXT_PROCESS_ROUTER;
+
+ return nxt_master_create_worker_process(task, rt, init);
+}
+
+
+static nxt_int_t
+nxt_master_start_worker_processes(nxt_task_t *task, nxt_runtime_t *rt)
+{
+ nxt_int_t ret;
+ nxt_uint_t n;
+ nxt_process_init_t *init;
+
+ init = nxt_mem_alloc(rt->mem_pool, sizeof(nxt_process_init_t));
+ if (nxt_slow_path(init == NULL)) {
+ return NXT_ERROR;
+ }
+
+ init->start = nxt_app_start;
+ init->name = "worker process";
+ init->user_cred = &rt->user_cred;
+ init->port_handlers = nxt_worker_process_port_handlers;
+ init->signals = nxt_worker_process_signals;
+ init->type = NXT_PROCESS_WORKER;
+
+ n = rt->worker_processes;
while (n-- != 0) {
- ret = nxt_master_create_worker_process(task, cycle);
+ ret = nxt_master_create_worker_process(task, rt, init);
if (ret != NXT_OK) {
return ret;
@@ -142,18 +208,34 @@ nxt_master_start_worker_processes(nxt_task_t *task, nxt_cycle_t *cycle)
static nxt_int_t
-nxt_master_create_worker_process(nxt_task_t *task, nxt_cycle_t *cycle)
+nxt_master_create_worker_process(nxt_task_t *task, nxt_runtime_t *rt,
+ nxt_process_init_t *init)
{
- nxt_int_t ret;
- nxt_pid_t pid;
- nxt_port_t *port;
+ nxt_int_t ret;
+ nxt_pid_t pid;
+ nxt_port_t *port;
+ nxt_process_t *process, *master_process;
- port = nxt_array_zero_add(cycle->ports);
+ /*
+ * TODO: remove process, init, ports from array on memory and fork failures.
+ */
+
+ process = nxt_runtime_new_process(rt);
+ if (nxt_slow_path(process == NULL)) {
+ return NXT_ERROR;
+ }
+
+ process->init = init;
+
+ master_process = rt->processes->elts;
+ init->master_port = master_process->ports->elts;
+
+ port = nxt_array_zero_add(process->ports);
if (nxt_slow_path(port == NULL)) {
return NXT_ERROR;
}
- cycle->current_process = cycle->ports->nelts - 1;
+ init->port = port;
ret = nxt_port_socket_init(task, port, 0);
if (nxt_slow_path(ret != NXT_OK)) {
@@ -161,10 +243,8 @@ nxt_master_create_worker_process(nxt_task_t *task, nxt_cycle_t *cycle)
}
port->engine = 0;
- port->generation = cycle->process_generation;
- pid = nxt_process_create(nxt_worker_process_start, cycle,
- "start worker process");
+ pid = nxt_process_create(task, init);
switch (pid) {
@@ -177,110 +257,42 @@ nxt_master_create_worker_process(nxt_task_t *task, nxt_cycle_t *cycle)
default:
/* The master process created a new process. */
+ process->pid = pid;
port->pid = pid;
nxt_port_read_close(port);
nxt_port_write_enable(task, port);
- nxt_port_send_new_port(task, cycle, port);
+ nxt_port_send_new_port(task, rt, port);
return NXT_OK;
}
}
-static void
-nxt_master_process_sighup_handler(nxt_task_t *task, void *obj, void *data)
-{
- nxt_cycle_t *cycle;
-
- cycle = nxt_thread_cycle();
-
- nxt_log(task, NXT_LOG_NOTICE, "signal %d (%s) recevied, %s",
- (int) (uintptr_t) obj, data,
- cycle->reconfiguring ? "ignored" : "reconfiguring");
-
- if (!cycle->reconfiguring) {
- (void) nxt_cycle_create(task->thread, task, cycle,
- nxt_master_process_new_cycle);
- }
-}
-
-
-static void
-nxt_master_process_new_cycle(nxt_task_t *task, nxt_cycle_t *cycle)
-{
- nxt_thread_t *thr;
-
- thr = task->thread;
-
- nxt_debug(task, "new cycle");
-
- /* A safe place to free the previous cycle. */
- nxt_mem_pool_destroy(cycle->previous->mem_pool);
-
- switch (nxt_master_start_worker_processes(task, cycle)) {
-
- case NXT_OK:
- /*
- * The master process, allow old worker processes to accept new
- * connections yet 500ms in parallel with new worker processes.
- */
- cycle->timer.handler = nxt_master_stop_previous_worker_processes;
- cycle->timer.log = &nxt_main_log;
-
- cycle->timer.work_queue = &thr->engine->fast_work_queue;
-
- nxt_timer_add(thr->engine, &cycle->timer, 500);
-
- return;
-
- case NXT_ERROR:
- /*
- * The master process, one or more new worker processes
- * could not be created, there is no fallback.
- */
- return;
-
- default: /* NXT_AGAIN */
- /* A worker process, return to the event engine work queue loop. */
- return;
- }
-}
-
-
-static void
-nxt_master_stop_previous_worker_processes(nxt_task_t *task, void *obj,
- void *data)
+void
+nxt_master_stop_worker_processes(nxt_task_t *task, nxt_runtime_t *rt)
{
- uint32_t generation;
- nxt_uint_t i, n;
- nxt_port_t *port;
- nxt_cycle_t *cycle;
+ nxt_uint_t i, n, nprocesses, nports;
+ nxt_port_t *port;
+ nxt_process_t *process;
- cycle = nxt_thread_cycle();
+ process = rt->processes->elts;
+ nprocesses = rt->processes->nelts;
- port = cycle->ports->elts;
- n = cycle->ports->nelts;
+ for (i = 0; i < nprocesses; i++) {
- generation = cycle->process_generation - 1;
+ if (nxt_pid != process[i].pid) {
+ process[i].init = NULL;
- /* The port[0] is the master process port. */
+ port = process[i].ports->elts;
+ nports = process[i].ports->nelts;
- for (i = 1; i < n; i++) {
- if (port[i].generation == generation) {
- (void) nxt_port_socket_write(task, &port[i],
- NXT_PORT_MSG_QUIT, -1, 0, NULL);
+ for (n = 0; n < nports; n++) {
+ (void) nxt_port_socket_write(task, &port[n], NXT_PORT_MSG_QUIT,
+ -1, 0, NULL);
+ }
}
}
-
- cycle->reconfiguring = 0;
-}
-
-
-void
-nxt_master_stop_worker_processes(nxt_task_t *task, nxt_cycle_t *cycle)
-{
- nxt_port_write(task, cycle, NXT_PORT_MSG_QUIT, -1, 0, NULL);
}
@@ -295,7 +307,7 @@ nxt_master_process_sigterm_handler(nxt_task_t *task, void *obj, void *data)
nxt_exiting = 1;
- nxt_cycle_quit(task, NULL);
+ nxt_runtime_quit(task);
}
@@ -309,7 +321,7 @@ nxt_master_process_sigquit_handler(nxt_task_t *task, void *obj, void *data)
nxt_exiting = 1;
- nxt_cycle_quit(task, NULL);
+ nxt_runtime_quit(task);
}
@@ -319,7 +331,7 @@ nxt_master_process_sigusr1_handler(nxt_task_t *task, void *obj, void *data)
nxt_int_t ret;
nxt_uint_t n;
nxt_file_t *file, *new_file;
- nxt_cycle_t *cycle;
+ nxt_runtime_t *rt;
nxt_array_t *new_files;
nxt_mem_pool_t *mp;
@@ -331,9 +343,9 @@ nxt_master_process_sigusr1_handler(nxt_task_t *task, void *obj, void *data)
return;
}
- cycle = nxt_thread_cycle();
+ rt = task->thread->runtime;
- n = nxt_list_nelts(cycle->log_files);
+ n = nxt_list_nelts(rt->log_files);
new_files = nxt_array_create(mp, n, sizeof(nxt_file_t));
if (new_files == NULL) {
@@ -341,7 +353,7 @@ nxt_master_process_sigusr1_handler(nxt_task_t *task, void *obj, void *data)
return;
}
- nxt_list_each(file, cycle->log_files) {
+ nxt_list_each(file, rt->log_files) {
/* This allocation cannot fail. */
new_file = nxt_array_add(new_files);
@@ -350,7 +362,7 @@ nxt_master_process_sigusr1_handler(nxt_task_t *task, void *obj, void *data)
new_file->fd = NXT_FILE_INVALID;
new_file->log_level = NXT_LOG_CRIT;
- ret = nxt_file_open(new_file, NXT_FILE_APPEND, NXT_FILE_CREATE_OR_OPEN,
+ ret = nxt_file_open(task, new_file, O_WRONLY | O_APPEND, O_CREAT,
NXT_FILE_OWNER_ACCESS);
if (ret != NXT_OK) {
@@ -366,9 +378,9 @@ nxt_master_process_sigusr1_handler(nxt_task_t *task, void *obj, void *data)
if (ret == NXT_OK) {
n = 0;
- nxt_list_each(file, cycle->log_files) {
+ nxt_list_each(file, rt->log_files) {
- nxt_port_change_log_file(task, cycle, n, new_file[n].fd);
+ nxt_port_change_log_file(task, rt, n, new_file[n].fd);
/*
* The old log file descriptor must be closed at the moment
* when no other threads use it. dup2() allows to use the
@@ -392,7 +404,7 @@ fail:
while (n != 0) {
if (new_file->fd != NXT_FILE_INVALID) {
- nxt_file_close(new_file);
+ nxt_file_close(task, new_file);
}
new_file++;
@@ -404,164 +416,6 @@ fail:
static void
-nxt_master_process_sigusr2_handler(nxt_task_t *task, void *obj, void *data)
-{
- char **env;
- nxt_int_t ret;
- nxt_pid_t pid, ppid;
- nxt_bool_t ignore;
- nxt_cycle_t *cycle;
-
- cycle = nxt_thread_cycle();
-
- /* Is upgrade or reconfiguring in progress? */
- ignore = (cycle->new_binary != 0) || cycle->reconfiguring;
-
- ppid = getppid();
-
- if (ppid == nxt_ppid && ppid != 1) {
- /*
- * Ignore the upgrade signal in a new master process if an old
- * master process is still running. After the old process's exit
- * getppid() will return 1 (init process pid) or pid of zsched (zone
- * scheduler) if the processes run in Solaris zone. There is little
- * race condition between the parent process exit and getting getppid()
- * for the very start of the new master process execution, so init or
- * zsched pid may be stored in nxt_ppid. For this reason pid 1 is
- * tested explicitly. There is no workaround for this race condition
- * in Solaris zons. To eliminate this race condition in Solaris
- * zone the old master process should be quit only when both
- * "nginext.pid.oldbin" (created by the old master process) and
- * "nginext.pid" (created by the new master process) files exists.
- */
- ignore = 1;
- }
-
- nxt_log(task, NXT_LOG_NOTICE,
- "signal %d (%s) recevied, %s, parent pid: %PI",
- (int) (uintptr_t) obj, data,
- ignore ? "ignored" : "online binary file upgrade", ppid);
-
- if (ignore) {
- return;
- }
-
- env = nxt_master_process_upgrade_environment(cycle);
- if (nxt_slow_path(env == NULL)) {
- return;
- }
-
- cycle->new_binary = -1;
-
- ret = nxt_cycle_pid_file_create(cycle->oldbin_file, 0);
- if (nxt_slow_path(ret != NXT_OK)) {
- goto fail;
- }
-
- pid = nxt_process_execute(nxt_process_argv[0], nxt_process_argv, env);
-
- if (pid == -1) {
- cycle->new_binary = 0;
- (void) nxt_file_delete(cycle->oldbin_file);
-
- } else {
- cycle->new_binary = pid;
- }
-
-fail:
-
- /* Zero slot is NGINX variable slot, all other slots must not be free()d. */
- nxt_free(env[0]);
- nxt_free(env);
-}
-
-
-static char **
-nxt_master_process_upgrade_environment(nxt_cycle_t *cycle)
-{
- size_t len;
- char **env;
- u_char *p, *end;
- nxt_uint_t n;
- nxt_listen_socket_t *ls;
-
- env = nxt_master_process_upgrade_environment_create(cycle);
- if (nxt_slow_path(env == NULL)) {
- return NULL;
- }
-
- ls = cycle->listen_sockets->elts;
- n = cycle->listen_sockets->nelts;
-
- len = sizeof("NGINX=") + n * (NXT_INT_T_LEN + 1);
-
- p = nxt_malloc(len);
-
- if (nxt_slow_path(p == NULL)) {
- nxt_free(env);
- return NULL;
- }
-
- env[0] = (char *) p;
- end = p + len;
-
- p = nxt_cpymem(p, "NGINX=", sizeof("NGINX=") - 1);
-
- do {
- p = nxt_sprintf(p, end, "%ud;", ls->socket);
-
- ls++;
- n--;
- } while (n != 0);
-
- *p = '\0';
-
- return env;
-}
-
-
-static char **
-nxt_master_process_upgrade_environment_create(nxt_cycle_t *cycle)
-{
- char **env;
- nxt_uint_t n;
-
- /* 2 is for "NGINX" variable and the last NULL slot. */
- n = 2;
-
-#if (NXT_SETPROCTITLE_ARGV)
- n++;
-#endif
-
- env = nxt_malloc(n * sizeof(char *));
- if (nxt_slow_path(env == NULL)) {
- return NULL;
- }
-
- /* Zero slot is reserved for "NGINX" variable. */
- n = 1;
-
- /* TODO: copy env values */
-
-#if (NXT_SETPROCTITLE_ARGV)
-
- /* 300 spare bytes for new process title. */
- env[n++] = (char *)
- "SPARE=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
- "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
- "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
- "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
- "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
-
-#endif
-
- env[n] = NULL;
-
- return env;
-}
-
-
-static void
nxt_master_process_sigchld_handler(nxt_task_t *task, void *obj, void *data)
{
int status;
@@ -619,38 +473,36 @@ nxt_master_process_sigchld_handler(nxt_task_t *task, void *obj, void *data)
static void
nxt_master_cleanup_worker_process(nxt_task_t *task, nxt_pid_t pid)
{
- nxt_uint_t i, n, generation;
- nxt_port_t *port;
- nxt_cycle_t *cycle;
+ nxt_uint_t i, n;
+ nxt_runtime_t *rt;
+ nxt_process_t *process;
+ nxt_process_init_t *init;
- cycle = nxt_thread_cycle();
+ rt = task->thread->runtime;
- if (cycle->new_binary == pid) {
- cycle->new_binary = 0;
+ process = rt->processes->elts;
+ n = rt->processes->nelts;
- (void) nxt_file_rename(cycle->oldbin_file, cycle->pid_file);
- return;
- }
+ /* A process[0] is the master process. */
- port = cycle->ports->elts;
- n = cycle->ports->nelts;
+ for (i = 1; i < n; i++) {
- for (i = 0; i < n; i++) {
+ if (pid == process[i].pid) {
+ init = process[i].init;
- if (pid == port[i].pid) {
- generation = port[i].generation;
+ /* TODO: free ports fds. */
- nxt_array_remove(cycle->ports, &port[i]);
+ nxt_array_remove(rt->processes, &process[i]);
if (nxt_exiting) {
nxt_debug(task, "processes %d", n);
if (n == 2) {
- nxt_cycle_quit(task, cycle);
+ nxt_runtime_quit(task);
}
- } else if (generation == cycle->process_generation) {
- (void) nxt_master_create_worker_process(task, cycle);
+ } else if (init != NULL) {
+ (void) nxt_master_create_worker_process(task, rt, init);
}
return;
generated by cgit (git 2.34.1) at 2024-11-17 00:36:18 +0000