1 files changed, 78 insertions, 0 deletions
diff --git a/ext/opcache/shared_alloc_mmap.c b/ext/opcache/shared_alloc_mmap.c
new file mode 100644
index 000000000..12f00554a
--- /dev/null
+++ b/ext/opcache/shared_alloc_mmap.c
@@ -0,0 +1,78 @@
+/*
+   +----------------------------------------------------------------------+
+   | Zend OPcache                                                         |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 1998-2013 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_MMAP
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+
+#if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)
+# define MAP_ANONYMOUS MAP_ANON
+#endif
+
+static int create_segments(size_t requested_size, zend_shared_segment ***shared_segments_p, int *shared_segments_count, char **error_in)
+{
+	zend_shared_segment *shared_segment;
+
+	*shared_segments_count = 1;
+	*shared_segments_p = (zend_shared_segment **) calloc(1, sizeof(zend_shared_segment) + sizeof(void *));
+	if (!*shared_segments_p) {
+		*error_in = "calloc";
+		return ALLOC_FAILURE;
+	}
+	shared_segment = (zend_shared_segment *)((char *)(*shared_segments_p) + sizeof(void *));
+	(*shared_segments_p)[0] = shared_segment;
+
+	shared_segment->p = mmap(0, requested_size, PROT_READ | PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0);
+	if (shared_segment->p == MAP_FAILED) {
+		*error_in = "mmap";
+		return ALLOC_FAILURE;
+	}
+
+	shared_segment->pos = 0;
+	shared_segment->size = requested_size;
+
+	return ALLOC_SUCCESS;
+}
+
+static int detach_segment(zend_shared_segment *shared_segment)
+{
+	munmap(shared_segment->p, shared_segment->size);
+	return 0;
+}
+
+static size_t segment_type_size(void)
+{
+	return sizeof(zend_shared_segment);
+}
+
+zend_shared_memory_handlers zend_alloc_mmap_handlers = {
+	create_segments,
+	detach_segment,
+	segment_type_size
+};
+
+#endif /* USE_MMAP */