mesa: Add missing include guards

[mesa.git] / src / mesa / main / execmem.c

diff --git a/src/mesa/main/execmem.c b/src/mesa/main/execmem.c
index 0fe85af93e0c98addd7302d7144aac3dee74ccaf..2142b50a6e93e5a7c6a516a28a5fcec3aaea1840 100644 (file)
--- a/src/mesa/main/execmem.c
+++ b/src/mesa/main/execmem.c
@@ -1,6 +1,5 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.5
  *
  * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
  *
@@ -17,26 +16,28 @@
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
  */
 
 
 /**
- * \file exemem.c
+ * \file execmem.c
  * Functions for allocating executable memory.
  *
  * \author Keith Whitwell
  */
 
 
+#include <stdio.h>
 #include "imports.h"
-#include "glapi/glthread.h"
+#include "execmem.h"
+#include "c11/threads.h"
 
 
-
-#if defined(__linux__) || defined(__OpenBSD__) || defined(_NetBSD__)
+#if defined(__linux__) || defined(__OpenBSD__) || defined(_NetBSD__) || defined(__sun) || defined(__HAIKU__)
 
 /*
  * Allocate a large block of memory which can hold code then dole it out
@@ -59,22 +60,31 @@
 
 #define EXEC_HEAP_SIZE (10*1024*1024)
 
-_glthread_DECLARE_STATIC_MUTEX(exec_mutex);
+static mtx_t exec_mutex = _MTX_INITIALIZER_NP;
 
 static struct mem_block *exec_heap = NULL;
 static unsigned char *exec_mem = NULL;
 
 
-static void
+static int
 init_heap(void)
 {
+#ifdef MESA_SELINUX
+   if (is_selinux_enabled()) {
+      if (!security_get_boolean_active("allow_execmem") ||
+         !security_get_boolean_pending("allow_execmem"))
+         return 0;
+   }
+#endif
+
    if (!exec_heap)
       exec_heap = mmInit( 0, EXEC_HEAP_SIZE );
    
    if (!exec_mem)
-      exec_mem = (unsigned char *) mmap(0, EXEC_HEAP_SIZE, 
-                                       PROT_EXEC | PROT_READ | PROT_WRITE, 
-                                       MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+      exec_mem = mmap(NULL, EXEC_HEAP_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE,
+                     MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+
+   return (exec_mem != MAP_FAILED);
 }
 
 
@@ -84,9 +94,10 @@ _mesa_exec_malloc(GLuint size)
    struct mem_block *block = NULL;
    void *addr = NULL;
 
-   _glthread_LOCK_MUTEX(exec_mutex);
+   mtx_lock(&exec_mutex);
 
-   init_heap();
+   if (!init_heap())
+      goto bail;
 
    if (exec_heap) {
       size = (size + 31) & ~31;
@@ -96,9 +107,10 @@ _mesa_exec_malloc(GLuint size)
    if (block)
       addr = exec_mem + block->ofs;
    else 
-      _mesa_printf("_mesa_exec_malloc failed\n");
-   
-   _glthread_UNLOCK_MUTEX(exec_mutex);
+      printf("_mesa_exec_malloc failed\n");
+
+bail:
+   mtx_unlock(&exec_mutex);
    
    return addr;
 }
@@ -107,7 +119,7 @@ _mesa_exec_malloc(GLuint size)
 void 
 _mesa_exec_free(void *addr)
 {
-   _glthread_LOCK_MUTEX(exec_mutex);
+   mtx_lock(&exec_mutex);
 
    if (exec_heap) {
       struct mem_block *block = mmFindBlock(exec_heap, (unsigned char *)addr - exec_mem);
@@ -116,7 +128,7 @@ _mesa_exec_free(void *addr)
         mmFreeMem(block);
    }
 
-   _glthread_UNLOCK_MUTEX(exec_mutex);
+   mtx_unlock(&exec_mutex);
 }
 
 
@@ -129,14 +141,14 @@ _mesa_exec_free(void *addr)
 void *
 _mesa_exec_malloc(GLuint size)
 {
-   return _mesa_malloc( size );
+   return malloc( size );
 }
 
  
 void 
 _mesa_exec_free(void *addr)
 {
-   _mesa_free(addr);
+   free(addr);
 }