Mercurial > hg > nginx
view src/core/ngx_garbage_collector.c @ 185:d5f50cefc322
nginx-0.0.1-2003-11-14-19:52:04 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Fri, 14 Nov 2003 16:52:04 +0000 |
parents | |
children | c1f3a3c7c5db |
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#include <ngx_config.h> #include <ngx_core.h> typedef struct ngx_gc_s ngx_gc_t; typedef int (*ngx_gc_handler_pt) (ngx_gc_t *ctx, ngx_str_t *name, ngx_file_info_t *fi); struct ngx_gc_s { ngx_path_t *path; u_int deleted; off_t freed; ngx_gc_handler_pt handler; ngx_log_t *log; }; static int ngx_collect_garbage(ngx_gc_t *ctx, ngx_str_t *dname, int level); #if 0 { ngx_test_null(cycle->timer_events, ngx_alloc(sizeof(ngx_event_t) * TIMERS, cycle->log), NGX_ERROR); ngx_event_timer_init(cycle); } void garbage_collector() { ngx_msec_t timer; struct timeval tv; ngx_epoch_msec_t delta; for ( ;; ) { timer = ngx_event_find_timer(); ngx_gettimeofday(&tv); delta = tv.tv_sec * 1000 + tv.tv_usec / 1000; msleep(timer); ngx_gettimeofday(&tv); ngx_cached_time = tv.tv_sec; ngx_time_update(); delta = tv.tv_sec * 1000 + tv.tv_usec / 1000 - delta; ngx_event_expire_timers((ngx_msec_t) delta); } } #endif void stub_init(ngx_log_t *log) { ngx_gc_t *ctx; ngx_path_t path; if (!(ctx = ngx_alloc(sizeof(ngx_gc_t), log))) { return; } path.name.len = 4; path.name.data = "temp"; path.len = 5; path.level[0] = 1; path.level[1] = 2; path.level[2] = 0; ctx->path = &path; ctx->log = log; ngx_collect_garbage(ctx, &path.name, 0); } static int ngx_collect_garbage(ngx_gc_t *ctx, ngx_str_t *dname, int level) { int nlen; char *last; ngx_str_t fname; ngx_dir_t *dir; ngx_dirent_t *de; ngx_file_info_t fi; fname.len = 0; ngx_log_debug(ctx->log, "dir %s" _ dname->data); dir = ngx_open_dir(dname->data); if (dir == NULL) { ngx_log_error(NGX_LOG_ERR, ctx->log, ngx_errno, ngx_open_dir_n " \"%s\" failed", dname->data); return NGX_ERROR; } for ( ;; ) { de = ngx_read_dir(dir); if (de == NULL) { if (fname.len) { ngx_free(fname.data); } break; } ngx_log_debug(ctx->log, "file %s" _ de->d_name); #ifdef __FreeBSD__ nlen = de->d_namlen; #else nlen = ngx_strlen(de->d_name); #endif if (nlen == 1 && de->d_name[0] == '.') { continue; } if (nlen == 2 && de->d_name[0] == '.' && de->d_name[1] == '.') { continue; } if (dname->len + 1 + nlen > fname.len) { if (fname.len) { ngx_free(fname.data); } fname.len = dname->len + 1 + nlen; if (!(fname.data = ngx_alloc(fname.len + 1, ctx->log))) { return NGX_ABORT; } } last = ngx_cpymem(fname.data, dname->data, dname->len); *last++ = '/'; ngx_memcpy(last, de->d_name, nlen + 1); ngx_log_debug(ctx->log, "de %s" _ fname.data); if (ngx_file_type(fname.data, &fi) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, ngx_file_type_n " \"%s\" failed", fname.data); continue; } if (ngx_is_dir((&fi))) { ngx_log_debug(ctx->log, "enter %s" _ fname.data); if (level == -1 /* there can not be directory on the last level */ || level == NGX_MAX_PATH_LEVEL /* an directory from the old path hierarchy */ || nlen != ctx->path->level[level]) { if (ngx_collect_garbage(ctx, &fname, -1) == NGX_ABORT) { return NGX_ABORT; } ngx_log_error(NGX_LOG_NOTICE, ctx->log, 0, "delete old hierachy directory \"%s\"", fname.data); if (ngx_delete_dir(fname.data) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, ngx_delete_dir_n " \"%s\" failed", fname.data); } else { ctx->deleted++; ctx->freed += ngx_file_size((&fi)); } continue; } if (ngx_collect_garbage(ctx, &fname, level + 1) == NGX_ABORT) { return NGX_ABORT; } } else if (ngx_is_file((&fi))) { if (level == -1 || (level < NGX_MAX_PATH_LEVEL && ctx->path->level[level] != 0)) { if (ngx_delete_file(fname.data) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, ngx_delete_file_n " \"%s\" failed", fname.data); } else { ctx->deleted++; ctx->freed += ngx_file_size((&fi)); } continue; } if (ctx->handler(ctx, &fname, &fi) == NGX_ABORT) { return NGX_ABORT; } } else { ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, "\"%s\" has unknown file type, deleting", fname.data); if (ngx_delete_file(fname.data) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, ngx_delete_file_n " \"%s\" failed", fname.data); } else { ctx->deleted++; ctx->freed += ngx_file_size((&fi)); } } } return NGX_OK; } int ngx_garbage_collector_temp_handler(ngx_gc_t *ctx, ngx_str_t *name, ngx_file_info_t *fi) { /* * we use mtime only and do not use atime because: * on NTFS access time has a resolution of 1 hour, * on NT FAT access time has a resolution of 1 day, * Unices have mount option "noatime" */ if (ngx_cached_time - ngx_file_mtime(fi) < 3600) { return NGX_OK; } ngx_log_error(NGX_LOG_NOTICE, ctx->log, 0, "delete stale temporary \"%s\"", name->data); if (ngx_delete_file(name->data) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, ngx_delete_file_n " \"%s\" failed", name->data); return NGX_ERROR; } ctx->deleted++; ctx->freed += ngx_file_size(fi); return NGX_OK; }