nginx-0.0.1-2004-01-05-23:55:48 import
diff --git a/src/core/ngx_cycle.c b/src/core/ngx_cycle.c
new file mode 100644
index 0000000..29af022
--- /dev/null
+++ b/src/core/ngx_cycle.c
@@ -0,0 +1,743 @@
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_event.h>
+/* STUB */
+#include <nginx.h>
+
+
+static void ngx_clean_old_cycles(ngx_event_t *ev);
+
+
+volatile ngx_cycle_t *ngx_cycle;
+ngx_array_t ngx_old_cycles;
+
+static ngx_pool_t *ngx_temp_pool;
+static ngx_event_t ngx_cleaner_event;
+
+
+/* STUB NAME */
+static ngx_connection_t dumb;
+/* STUB */
+
+
+ngx_cycle_t *ngx_init_cycle(ngx_cycle_t *old_cycle)
+{
+ ngx_int_t i, n, failed;
+ ngx_str_t conf_file;
+ ngx_log_t *log;
+ ngx_conf_t conf;
+ ngx_pool_t *pool;
+ ngx_cycle_t *cycle, **old;
+ ngx_socket_t fd;
+ ngx_open_file_t *file;
+ ngx_listening_t *ls, *nls;
+
+ log = old_cycle->log;
+
+ if (!(pool = ngx_create_pool(16 * 1024, log))) {
+ return NULL;
+ }
+
+ if (!(cycle = ngx_pcalloc(pool, sizeof(ngx_cycle_t)))) {
+ ngx_destroy_pool(pool);
+ return NULL;
+ }
+ cycle->pool = pool;
+
+ cycle->old_cycle = old_cycle;
+
+
+ n = old_cycle->pathes.nelts ? old_cycle->pathes.nelts : 10;
+ if (!(cycle->pathes.elts = ngx_pcalloc(pool, n * sizeof(ngx_path_t *)))) {
+ ngx_destroy_pool(pool);
+ return NULL;
+ }
+ cycle->pathes.nelts = 0;
+ cycle->pathes.size = sizeof(ngx_path_t *);
+ cycle->pathes.nalloc = n;
+ cycle->pathes.pool = pool;
+
+
+ n = old_cycle->open_files.nelts ? old_cycle->open_files.nelts : 20;
+ cycle->open_files.elts = ngx_pcalloc(pool, n * sizeof(ngx_open_file_t));
+ if (cycle->open_files.elts == NULL) {
+ ngx_destroy_pool(pool);
+ return NULL;
+ }
+ cycle->open_files.nelts = 0;
+ cycle->open_files.size = sizeof(ngx_open_file_t);
+ cycle->open_files.nalloc = n;
+ cycle->open_files.pool = pool;
+
+
+ if (!(cycle->log = ngx_log_create_errlog(cycle, NULL))) {
+ 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;
+
+
+ cycle->conf_ctx = ngx_pcalloc(pool, ngx_max_module * sizeof(void *));
+ if (cycle->conf_ctx == NULL) {
+ ngx_destroy_pool(pool);
+ return NULL;
+ }
+
+
+ if (ngx_core_module.init_module(cycle) == NGX_ERROR) {
+ ngx_destroy_pool(pool);
+ return NULL;
+ }
+
+
+ ngx_memzero(&conf, sizeof(ngx_conf_t));
+ /* STUB: init array ? */
+ conf.args = ngx_create_array(pool, 10, sizeof(ngx_str_t));
+ if (conf.args == NULL) {
+ ngx_destroy_pool(pool);
+ return NULL;
+ }
+
+ conf.ctx = cycle->conf_ctx;
+ conf.cycle = cycle;
+ /* STUB */ conf.pool = cycle->pool;
+ conf.log = log;
+ conf.module_type = NGX_CORE_MODULE;
+ conf.cmd_type = NGX_MAIN_CONF;
+
+ conf_file.len = sizeof(NGINX_CONF) - 1;
+ conf_file.data = NGINX_CONF;
+
+ if (ngx_conf_parse(&conf, &conf_file) != NGX_CONF_OK) {
+ ngx_destroy_pool(pool);
+ return NULL;
+ }
+
+
+ failed = 0;
+
+ file = cycle->open_files.elts;
+ for (i = 0; i < cycle->open_files.nelts; i++) {
+ if (file[i].name.data == NULL) {
+ continue;
+ }
+
+ file[i].fd = ngx_open_file(file[i].name.data,
+ NGX_FILE_RDWR,
+ NGX_FILE_CREATE_OR_OPEN|NGX_FILE_APPEND);
+
+ngx_log_debug(log, "OPEN: %d:%s" _ 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);
+ failed = 1;
+ break;
+ }
+
+#if (WIN32)
+ if (ngx_file_append_mode(file[i].fd) == NGX_ERROR) {
+ ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
+ ngx_file_append_mode_n " \"%s\" failed",
+ file[i].name.data);
+ failed = 1;
+ break;
+ }
+#endif
+ }
+
+ if (!failed) {
+ 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;
+ }
+
+ ngx_log_error(NGX_LOG_INFO, log, 0,
+ "%X, %X",
+ *(int *) ls[i].sockaddr,
+ *(int *) nls[n].sockaddr);
+
+ if (ngx_memcmp(nls[n].sockaddr,
+ ls[i].sockaddr, ls[i].socklen) == 0)
+ {
+ fd = ls[i].fd;
+#if (WIN32)
+ /*
+ * Winsock assignes a socket number divisible by 4 so
+ * to find a connection we divide a socket number by 4.
+ */
+
+ fd /= 4;
+#endif
+ if (fd >= (ngx_socket_t) cycle->connection_n) {
+ ngx_log_error(NGX_LOG_EMERG, log, 0,
+ "%d connections is not enough to hold "
+ "an open listening socket on %s, "
+ "required at least %d connections",
+ cycle->connection_n,
+ ls[i].addr_text.data, fd);
+ failed = 1;
+ break;
+ }
+
+ nls[n].fd = ls[i].fd;
+ nls[i].remain = 1;
+ ls[i].remain = 1;
+ break;
+ }
+ }
+
+ if (nls[n].fd == -1) {
+ nls[n].new = 1;
+ }
+ }
+
+ } else {
+ ls = cycle->listening.elts;
+ for (i = 0; i < cycle->listening.nelts; i++) {
+ ls[i].new = 1;
+ }
+ }
+
+ if (!failed) {
+ if (ngx_open_listening_sockets(cycle) == NGX_ERROR) {
+ failed = 1;
+ }
+ }
+ }
+
+ if (failed) {
+
+ /* rollback the new cycle configuration */
+
+ file = cycle->open_files.elts;
+ for (i = 0; i < cycle->open_files.nelts; i++) {
+ if (file[i].fd == NGX_INVALID_FILE) {
+ 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);
+ }
+ }
+
+ ls = cycle->listening.elts;
+ for (i = 0; i < cycle->listening.nelts; i++) {
+ if (ls[i].new && ls[i].fd == -1) {
+ continue;
+ }
+
+ if (ngx_close_socket(ls[i].fd) == -1) {
+ ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
+ ngx_close_socket_n " %s failed",
+ ls[i].addr_text.data);
+ }
+ }
+
+ ngx_destroy_pool(pool);
+ return NULL;
+ }
+
+ /* commit the new cycle configuration */
+
+ 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_ERROR) {
+ /* fatal */
+ exit(1);
+ }
+ }
+ }
+
+ /* close and delete stuff that lefts from an old cycle */
+
+ /* close the unneeded listening sockets */
+
+ ls = old_cycle->listening.elts;
+ for (i = 0; i < old_cycle->listening.nelts; i++) {
+ if (ls[i].remain) {
+ continue;
+ }
+
+ if (ngx_close_socket(ls[i].fd) == -1) {
+ ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
+ ngx_close_socket_n " %s failed",
+ ls[i].addr_text.data);
+ }
+ }
+
+
+ /* close the unneeded open files */
+
+ file = old_cycle->open_files.elts;
+ for (i = 0; i < old_cycle->open_files.nelts; i++) {
+ if (file[i].fd == NGX_INVALID_FILE) {
+ 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 (old_cycle->connections == NULL) {
+ /* an old cycle is an init cycle */
+ ngx_destroy_pool(old_cycle->pool);
+ return cycle;
+ }
+
+ if (ngx_master) {
+ ngx_destroy_pool(old_cycle->pool);
+ 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,
+ "can 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.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_push_array(&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;
+}
+
+
+#if 0
+
+
+static ngx_int_t ngx_set_inherited_sockets(ngx_cycle_t *cycle, char **envp)
+{
+ char *p, *v;
+ ngx_socket_t s;
+ ngx_listening_t *ls;
+ struct sockaddr_in *addr_in;
+
+ for ( /* void */ ; *envp; envp++) {
+ if (ngx_strncmp(*envp, NGINX_VAR, NGINX_VAR_LEN) != 0) {
+ continue;
+ }
+
+ ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
+ "using inherited sockets from \"%s\"", *envp);
+
+ ngx_init_array(cycle->listening, cycle->pool,
+ 10, sizeof(ngx_listening_t), NGX_ERROR);
+
+ for (p = *envp + NGINX_VAR_LEN, v = p; *p; p++) {
+ if (*p == ':' || *p == ';') {
+ s = ngx_atoi(v, p - v);
+ if (s == NGX_ERROR) {
+ ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
+ "invalid socket number \"%s\" "
+ "in NGINX enviroment variable, "
+ "ignoring the rest of the variable", v);
+ break;
+ }
+ v = p + 1;
+
+ if (!(ls = ngx_push_array(&cycle->listening))) {
+ return NGX_ERROR;
+ }
+
+ ls->fd = s;
+
+ /* AF_INET only */
+
+ ls->sockaddr = ngx_palloc(cycle->pool,
+ sizeof(struct sockaddr_in));
+ if (ls->sockaddr == NULL) {
+ return NGX_ERROR;
+ }
+
+ ls->socklen = sizeof(struct sockaddr_in);
+ if (getsockname(s, ls->sockaddr, &ls->socklen) == -1) {
+ ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
+ "getsockname() of the inherited "
+ "socket #%d failed", s);
+ ls->ignore = 1;
+ continue;
+ }
+
+ addr_in = (struct sockaddr_in *) ls->sockaddr;
+
+ if (addr_in->sin_family != AF_INET) {
+ ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
+ "the inherited socket #%d has "
+ "unsupported family", s);
+ ls->ignore = 1;
+ continue;
+ }
+ ls->addr_text_max_len = INET_ADDRSTRLEN;
+
+ ls->addr_text.data = ngx_palloc(cycle->pool,
+ ls->addr_text_max_len);
+ if (ls->addr_text.data == NULL) {
+ return NGX_ERROR;
+ }
+
+ addr_in->sin_len = 0;
+
+ ls->family = addr_in->sin_family;
+ ls->addr_text.len = ngx_sock_ntop(ls->family, ls->sockaddr,
+ ls->addr_text.data,
+ ls->addr_text_max_len);
+ if (ls->addr_text.len == 0) {
+ return NGX_ERROR;
+ }
+ }
+ }
+
+ break;
+ }
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle)
+{
+ int tries, failed, reuseaddr, i;
+ ngx_err_t err;
+ ngx_log_t *log;
+ ngx_socket_t s;
+ ngx_listening_t *ls;
+
+ reuseaddr = 1;
+#if (NGX_SUPPRESS_WARN)
+ failed = 0;
+#endif
+
+ log = cycle->log;
+
+ /* TODO: tries configurable */
+
+ for (tries = 10; tries; tries--) {
+ failed = 0;
+
+ /* for each listening socket */
+
+ ls = cycle->listening.elts;
+ for (i = 0; i < cycle->listening.nelts; i++) {
+
+ if (ls[i].ignore) {
+ continue;
+ }
+
+ if (ls[i].fd != -1) {
+ continue;
+ }
+
+ if (ls[i].inherited) {
+
+ /* TODO: close on exit */
+ /* TODO: nonblocking */
+ /* TODO: deferred accept */
+
+ continue;
+ }
+
+ s = ngx_socket(ls[i].family, ls[i].type, ls[i].protocol,
+ ls[i].flags);
+
+ if (s == -1) {
+ ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
+ ngx_socket_n " %s failed", ls[i].addr_text.data);
+ return NGX_ERROR;
+ }
+
+#if (WIN32)
+ /*
+ * Winsock assignes a socket number divisible by 4
+ * so to find a connection we divide a socket number by 4.
+ */
+
+ if (s % 4) {
+ ngx_log_error(NGX_LOG_EMERG, ls->log, 0,
+ ngx_socket_n " created socket %d", s);
+ return NGX_ERROR;
+ }
+#endif
+
+ if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
+ (const void *) &reuseaddr, sizeof(int)) == -1) {
+ ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
+ "setsockopt(SO_REUSEADDR) %s failed",
+ ls[i].addr_text.data);
+ return NGX_ERROR;
+ }
+
+ /* TODO: close on exit */
+
+ if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
+ if (ngx_nonblocking(s) == -1) {
+ ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
+ ngx_nonblocking_n " %s failed",
+ ls[i].addr_text.data);
+ return NGX_ERROR;
+ }
+ }
+
+#if 0
+ if (ls[i].nonblocking) {
+ if (ngx_nonblocking(s) == -1) {
+ ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
+ ngx_nonblocking_n " %s failed",
+ ls[i].addr_text.data);
+ return NGX_ERROR;
+ }
+ }
+#endif
+
+ if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
+ err = ngx_socket_errno;
+ ngx_log_error(NGX_LOG_EMERG, log, err,
+ "bind() to %s failed", ls[i].addr_text.data);
+
+ if (err != NGX_EADDRINUSE)
+ return NGX_ERROR;
+
+ if (ngx_close_socket(s) == -1)
+ ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
+ ngx_close_socket_n " %s failed",
+ ls[i].addr_text.data);
+
+ failed = 1;
+ continue;
+ }
+
+ if (listen(s, ls[i].backlog) == -1) {
+ ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
+ "listen() to %s failed", ls[i].addr_text.data);
+ return NGX_ERROR;
+ }
+
+ /* TODO: deferred accept */
+
+ ls[i].fd = s;
+ }
+
+ if (!failed)
+ break;
+
+ /* TODO: delay configurable */
+
+ ngx_log_error(NGX_LOG_NOTICE, log, 0,
+ "try again to bind() after 500ms");
+ ngx_msleep(500);
+ }
+
+ if (failed) {
+ ngx_log_error(NGX_LOG_EMERG, log, 0, "still can not bind()");
+ return NGX_ERROR;
+ }
+
+ return NGX_OK;
+}
+
+
+#endif
+
+
+void ngx_reopen_files(ngx_cycle_t *cycle)
+{
+ ngx_fd_t fd;
+ ngx_int_t i;
+ ngx_open_file_t *file;
+
+ file = cycle->open_files.elts;
+ for (i = 0; i < cycle->open_files.nelts; i++) {
+ if (file[i].name.data == NULL) {
+ continue;
+ }
+
+ fd = ngx_open_file(file[i].name.data, NGX_FILE_RDWR,
+ NGX_FILE_CREATE_OR_OPEN|NGX_FILE_APPEND);
+
+ ngx_log_debug3(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
+ "reopen file \"%s\", old:%d new:%d",
+ file[i].name.data, file[i].fd, fd);
+
+ if (fd == NGX_INVALID_FILE) {
+ ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
+ ngx_open_file_n " \"%s\" failed", file[i].name.data);
+ continue;
+ }
+
+#if (WIN32)
+ if (ngx_file_append_mode(fd) == NGX_ERROR) {
+ ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
+ ngx_file_append_mode_n " \"%s\" failed",
+ file[i].name.data);
+
+ if (ngx_close_file(fd) == NGX_FILE_ERROR) {
+ ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
+ ngx_close_file_n " \"%s\" failed",
+ file[i].name.data);
+ }
+
+ continue;
+ }
+#endif
+
+ if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) {
+ ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
+ ngx_close_file_n " \"%s\" failed",
+ file[i].name.data);
+ }
+
+ file[i].fd = fd;
+ }
+}
+
+
+#if 0
+
+static void ngx_close_listening_sockets(ngx_cycle_t *cycle)
+{
+ ngx_int_t i;
+ ngx_socket_t fd;
+ ngx_listening_t *ls;
+
+ if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
+ return;
+ }
+
+ ls = cycle->listening.elts;
+ for (i = 0; i < cycle->listening.nelts; i++) {
+ fd = ls[i].fd;
+
+#if (WIN32)
+ /*
+ * Winsock assignes a socket number divisible by 4
+ * so to find a connection we divide a socket number by 4.
+ */
+
+ fd /= 4;
+#endif
+
+ ngx_del_event(&cycle->read_events[fd], NGX_READ_EVENT, NGX_CLOSE_EVENT);
+
+ if (ngx_close_socket(ls[i].fd) == -1) {
+ ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
+ ngx_close_socket_n " %s failed",
+ ls[i].addr_text.data);
+ }
+
+ cycle->connections[fd].fd = -1;
+ }
+}
+
+#endif
+
+
+static void ngx_clean_old_cycles(ngx_event_t *ev)
+{
+ int i, n, found, live;
+ ngx_log_t *log;
+ ngx_cycle_t **cycle;
+
+ log = ngx_cycle->log;
+ ngx_temp_pool->log = log;
+
+ ngx_log_debug(log, "clean old cycles");
+
+ live = 0;
+
+ cycle = ngx_old_cycles.elts;
+ for (i = 0; i < ngx_old_cycles.nelts; i++) {
+
+ if (cycle[i] == NULL) {
+ continue;
+ }
+
+ found = 0;
+
+ for (n = 0; n < cycle[i]->connection_n; n++) {
+ if (cycle[i]->connections[n].fd != -1) {
+ found = 1;
+ ngx_log_debug(log, "live fd: %d" _ n);
+ break;
+ }
+ }
+
+ if (found) {
+ live = 1;
+ continue;
+ }
+
+ ngx_log_debug(log, "clean old cycle: %d" _ i);
+ ngx_destroy_pool(cycle[i]->pool);
+ cycle[i] = NULL;
+ }
+
+ ngx_log_debug(log, "old cycles status: %d" _ live);
+
+ if (live) {
+ ngx_log_debug(log, "TIMER");
+ ngx_add_timer(ev, 30000);
+
+ } else {
+ ngx_destroy_pool(ngx_temp_pool);
+ ngx_temp_pool = NULL;
+ ngx_old_cycles.nelts = 0;
+ }
+}
