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Diffstat (limited to 'ext/opcache/shared_alloc_posix.c')
| -rw-r--r-- | ext/opcache/shared_alloc_posix.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/ext/opcache/shared_alloc_posix.c b/ext/opcache/shared_alloc_posix.c new file mode 100644 index 0000000000..e4a34bd795 --- /dev/null +++ b/ext/opcache/shared_alloc_posix.c @@ -0,0 +1,98 @@ +/* + +----------------------------------------------------------------------+ + | Zend OPcache | + +----------------------------------------------------------------------+ + | Copyright (c) 1998-2014 The PHP Group | + +----------------------------------------------------------------------+ + | This source file is subject to version 3.01 of the PHP license, | + | that is bundled with this package in the file LICENSE, and is | + | available through the world-wide-web at the following url: | + | http://www.php.net/license/3_01.txt | + | If you did not receive a copy of the PHP license and are unable to | + | obtain it through the world-wide-web, please send a note to | + | license@php.net so we can mail you a copy immediately. | + +----------------------------------------------------------------------+ + | Authors: Andi Gutmans <andi@zend.com> | + | Zeev Suraski <zeev@zend.com> | + | Stanislav Malyshev <stas@zend.com> | + | Dmitry Stogov <dmitry@zend.com> | + +----------------------------------------------------------------------+ +*/ + +#include "zend_shared_alloc.h" + +#ifdef USE_SHM_OPEN + +#include <sys/types.h> +#include <sys/stat.h> +#include <stdio.h> +#include <fcntl.h> +#include <sys/mman.h> +#include <unistd.h> +#include <stdlib.h> + +typedef struct { + zend_shared_segment common; + int shm_fd; +} zend_shared_segment_posix; + +static int create_segments(size_t requested_size, zend_shared_segment_posix ***shared_segments_p, int *shared_segments_count, char **error_in) +{ + zend_shared_segment_posix *shared_segment; + char shared_segment_name[sizeof("/ZendAccelerator.") + 20]; + + *shared_segments_count = 1; + *shared_segments_p = (zend_shared_segment_posix **) calloc(1, sizeof(zend_shared_segment_posix) + sizeof(void *)); + if (!*shared_segments_p) { + *error_in = "calloc"; + return ALLOC_FAILURE; + } + shared_segment = (zend_shared_segment_posix *)((char *)(*shared_segments_p) + sizeof(void *)); + (*shared_segments_p)[0] = shared_segment; + + sprintf(shared_segment_name, "/ZendAccelerator.%d", getpid()); + shared_segment->shm_fd = shm_open(shared_segment_name, O_RDWR|O_CREAT|O_TRUNC, 0600); + if (shared_segment->shm_fd == -1) { + *error_in = "shm_open"; + return ALLOC_FAILURE; + } + + if (ftruncate(shared_segment->shm_fd, requested_size) != 0) { + *error_in = "ftruncate"; + shm_unlink(shared_segment_name); + return ALLOC_FAILURE; + } + + shared_segment->common.p = mmap(0, requested_size, PROT_READ | PROT_WRITE, MAP_SHARED, shared_segment->shm_fd, 0); + if (shared_segment->common.p == MAP_FAILED) { + *error_in = "mmap"; + shm_unlink(shared_segment_name); + return ALLOC_FAILURE; + } + shm_unlink(shared_segment_name); + + shared_segment->common.pos = 0; + shared_segment->common.size = requested_size; + + return ALLOC_SUCCESS; +} + +static int detach_segment(zend_shared_segment_posix *shared_segment) +{ + munmap(shared_segment->common.p, shared_segment->common.size); + close(shared_segment->shm_fd); + return 0; +} + +static size_t segment_type_size(void) +{ + return sizeof(zend_shared_segment_posix); +} + +zend_shared_memory_handlers zend_alloc_posix_handlers = { + (create_segments_t)create_segments, + (detach_segment_t)detach_segment, + segment_type_size +}; + +#endif /* USE_SHM_OPEN */ |