diff options
Diffstat (limited to 'app/nginx/src/core/ngx_palloc.c')
-rw-r--r-- | app/nginx/src/core/ngx_palloc.c | 430 |
1 files changed, 0 insertions, 430 deletions
diff --git a/app/nginx/src/core/ngx_palloc.c b/app/nginx/src/core/ngx_palloc.c deleted file mode 100644 index d3044ac..0000000 --- a/app/nginx/src/core/ngx_palloc.c +++ /dev/null @@ -1,430 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> - - -static ngx_inline void *ngx_palloc_small(ngx_pool_t *pool, size_t size, - ngx_uint_t align); -static void *ngx_palloc_block(ngx_pool_t *pool, size_t size); -static void *ngx_palloc_large(ngx_pool_t *pool, size_t size); - - -ngx_pool_t * -ngx_create_pool(size_t size, ngx_log_t *log) -{ - ngx_pool_t *p; - - p = ngx_memalign(NGX_POOL_ALIGNMENT, size, log); - if (p == NULL) { - return NULL; - } - - p->d.last = (u_char *) p + sizeof(ngx_pool_t); - p->d.end = (u_char *) p + size; - p->d.next = NULL; - p->d.failed = 0; - - size = size - sizeof(ngx_pool_t); - p->max = (size < NGX_MAX_ALLOC_FROM_POOL) ? size : NGX_MAX_ALLOC_FROM_POOL; - - p->current = p; - p->chain = NULL; - p->large = NULL; - p->cleanup = NULL; - p->log = log; - - return p; -} - - -void -ngx_destroy_pool(ngx_pool_t *pool) -{ - ngx_pool_t *p, *n; - ngx_pool_large_t *l; - ngx_pool_cleanup_t *c; - - for (c = pool->cleanup; c; c = c->next) { - if (c->handler) { - ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, - "run cleanup: %p", c); - c->handler(c->data); - } - } - -#if (NGX_DEBUG) - - /* - * we could allocate the pool->log from this pool - * so we cannot use this log while free()ing the pool - */ - - for (l = pool->large; l; l = l->next) { - ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, "free: %p", l->alloc); - } - - for (p = pool, n = pool->d.next; /* void */; p = n, n = n->d.next) { - ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, pool->log, 0, - "free: %p, unused: %uz", p, p->d.end - p->d.last); - - if (n == NULL) { - break; - } - } - -#endif - - for (l = pool->large; l; l = l->next) { - if (l->alloc) { - ngx_free(l->alloc); - } - } - - for (p = pool, n = pool->d.next; /* void */; p = n, n = n->d.next) { - ngx_free(p); - - if (n == NULL) { - break; - } - } -} - - -void -ngx_reset_pool(ngx_pool_t *pool) -{ - ngx_pool_t *p; - ngx_pool_large_t *l; - - for (l = pool->large; l; l = l->next) { - if (l->alloc) { - ngx_free(l->alloc); - } - } - - for (p = pool; p; p = p->d.next) { - p->d.last = (u_char *) p + sizeof(ngx_pool_t); - p->d.failed = 0; - } - - pool->current = pool; - pool->chain = NULL; - pool->large = NULL; -} - - -void * -ngx_palloc(ngx_pool_t *pool, size_t size) -{ -#if !(NGX_DEBUG_PALLOC) - if (size <= pool->max) { - return ngx_palloc_small(pool, size, 1); - } -#endif - - return ngx_palloc_large(pool, size); -} - - -void * -ngx_pnalloc(ngx_pool_t *pool, size_t size) -{ -#if !(NGX_DEBUG_PALLOC) - if (size <= pool->max) { - return ngx_palloc_small(pool, size, 0); - } -#endif - - return ngx_palloc_large(pool, size); -} - - -static ngx_inline void * -ngx_palloc_small(ngx_pool_t *pool, size_t size, ngx_uint_t align) -{ - u_char *m; - ngx_pool_t *p; - - p = pool->current; - - do { - m = p->d.last; - - if (align) { - m = ngx_align_ptr(m, NGX_ALIGNMENT); - } - - if ((size_t) (p->d.end - m) >= size) { - p->d.last = m + size; - - return m; - } - - p = p->d.next; - - } while (p); - - return ngx_palloc_block(pool, size); -} - - -static void * -ngx_palloc_block(ngx_pool_t *pool, size_t size) -{ - u_char *m; - size_t psize; - ngx_pool_t *p, *new; - - psize = (size_t) (pool->d.end - (u_char *) pool); - - m = ngx_memalign(NGX_POOL_ALIGNMENT, psize, pool->log); - if (m == NULL) { - return NULL; - } - - new = (ngx_pool_t *) m; - - new->d.end = m + psize; - new->d.next = NULL; - new->d.failed = 0; - - m += sizeof(ngx_pool_data_t); - m = ngx_align_ptr(m, NGX_ALIGNMENT); - new->d.last = m + size; - - for (p = pool->current; p->d.next; p = p->d.next) { - if (p->d.failed++ > 4) { - pool->current = p->d.next; - } - } - - p->d.next = new; - - return m; -} - - -static void * -ngx_palloc_large(ngx_pool_t *pool, size_t size) -{ - void *p; - ngx_uint_t n; - ngx_pool_large_t *large; - - p = ngx_alloc(size, pool->log); - if (p == NULL) { - return NULL; - } - - n = 0; - - for (large = pool->large; large; large = large->next) { - if (large->alloc == NULL) { - large->alloc = p; - return p; - } - - if (n++ > 3) { - break; - } - } - - large = ngx_palloc_small(pool, sizeof(ngx_pool_large_t), 1); - if (large == NULL) { - ngx_free(p); - return NULL; - } - - large->alloc = p; - large->next = pool->large; - pool->large = large; - - return p; -} - - -void * -ngx_pmemalign(ngx_pool_t *pool, size_t size, size_t alignment) -{ - void *p; - ngx_pool_large_t *large; - - p = ngx_memalign(alignment, size, pool->log); - if (p == NULL) { - return NULL; - } - - large = ngx_palloc_small(pool, sizeof(ngx_pool_large_t), 1); - if (large == NULL) { - ngx_free(p); - return NULL; - } - - large->alloc = p; - large->next = pool->large; - pool->large = large; - - return p; -} - - -ngx_int_t -ngx_pfree(ngx_pool_t *pool, void *p) -{ - ngx_pool_large_t *l; - - for (l = pool->large; l; l = l->next) { - if (p == l->alloc) { - ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, pool->log, 0, - "free: %p", l->alloc); - ngx_free(l->alloc); - l->alloc = NULL; - - return NGX_OK; - } - } - - return NGX_DECLINED; -} - - -void * -ngx_pcalloc(ngx_pool_t *pool, size_t size) -{ - void *p; - - p = ngx_palloc(pool, size); - if (p) { - ngx_memzero(p, size); - } - - return p; -} - - -ngx_pool_cleanup_t * -ngx_pool_cleanup_add(ngx_pool_t *p, size_t size) -{ - ngx_pool_cleanup_t *c; - - c = ngx_palloc(p, sizeof(ngx_pool_cleanup_t)); - if (c == NULL) { - return NULL; - } - - if (size) { - c->data = ngx_palloc(p, size); - if (c->data == NULL) { - return NULL; - } - - } else { - c->data = NULL; - } - - c->handler = NULL; - c->next = p->cleanup; - - p->cleanup = c; - - ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, p->log, 0, "add cleanup: %p", c); - - return c; -} - - -void -ngx_pool_run_cleanup_file(ngx_pool_t *p, ngx_fd_t fd) -{ - ngx_pool_cleanup_t *c; - ngx_pool_cleanup_file_t *cf; - - for (c = p->cleanup; c; c = c->next) { - if (c->handler == ngx_pool_cleanup_file) { - - cf = c->data; - - if (cf->fd == fd) { - c->handler(cf); - c->handler = NULL; - return; - } - } - } -} - - -void -ngx_pool_cleanup_file(void *data) -{ - ngx_pool_cleanup_file_t *c = data; - - ngx_log_debug1(NGX_LOG_DEBUG_ALLOC, c->log, 0, "file cleanup: fd:%d", - c->fd); - - if (ngx_close_file(c->fd) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, - ngx_close_file_n " \"%s\" failed", c->name); - } -} - - -void -ngx_pool_delete_file(void *data) -{ - ngx_pool_cleanup_file_t *c = data; - - ngx_err_t err; - - ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, c->log, 0, "file cleanup: fd:%d %s", - c->fd, c->name); - - if (ngx_delete_file(c->name) == NGX_FILE_ERROR) { - err = ngx_errno; - - if (err != NGX_ENOENT) { - ngx_log_error(NGX_LOG_CRIT, c->log, err, - ngx_delete_file_n " \"%s\" failed", c->name); - } - } - - if (ngx_close_file(c->fd) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, - ngx_close_file_n " \"%s\" failed", c->name); - } -} - - -#if 0 - -static void * -ngx_get_cached_block(size_t size) -{ - void *p; - ngx_cached_block_slot_t *slot; - - if (ngx_cycle->cache == NULL) { - return NULL; - } - - slot = &ngx_cycle->cache[(size + ngx_pagesize - 1) / ngx_pagesize]; - - slot->tries++; - - if (slot->number) { - p = slot->block; - slot->block = slot->block->next; - slot->number--; - return p; - } - - return NULL; -} - -#endif |