X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=cgltrace.py;h=92626f3a19620e039ffe46863c6a028b6acbc5ad;hb=99f84fa0e278f4ca30577c22ede85c643c6017cc;hp=33765f9b8d3b1ebfae3e81656c994e6434cc3cac;hpb=4364860d389bf273bcfce9c5286cc7a3642469c9;p=apitrace

diff --git a/cgltrace.py b/cgltrace.py
index 33765f9..92626f3 100644
--- a/cgltrace.py
+++ b/cgltrace.py
@@ -44,13 +44,14 @@ if __name__ == '__main__':
     print
     print '#include <stdlib.h>'
     print '#include <string.h>'
+    print '#include <unistd.h>'
     print
     print '#ifndef _GNU_SOURCE'
     print '#define _GNU_SOURCE // for dladdr'
     print '#endif'
     print '#include <dlfcn.h>'
     print
-    print '#include "trace_write.hpp"'
+    print '#include "trace_writer.hpp"'
     print
     print '// To validate our prototypes'
     print '#define GL_GLEXT_PROTOTYPES'
@@ -69,7 +70,13 @@ if __name__ == '__main__':
 
 
 /*
- * Handle to the true libGL.so
+ * Path to the true OpenGL framework
+ */
+static const char *libgl_filename = "/System/Library/Frameworks/OpenGL.framework/OpenGL";
+
+
+/*
+ * Handle to the true OpenGL framework.
  */
 static void *libgl_handle = NULL;
 
@@ -77,22 +84,30 @@ static void *libgl_handle = NULL;
 /*
  * Lookup a libGL symbol
  */
-static void * __dlsym(const char *symbol)
+void * __libgl_sym(const char *symbol)
 {
     void *result;
-    if (!libgl_handle) {
-        const char * libgl_filename;
 
+    if (!libgl_handle) {
         /* 
-         * Unfortunately we can't just dlopen
-         * /System/Library/Frameworks/OpenGL.framework/Libraries/libGL.dylib
-         * because DYLD_LIBRARY_PATH takes precedence, even for absolute paths.
+	 * Unfortunately we can't just dlopen the true dynamic library because
+	 * DYLD_LIBRARY_PATH/DYLD_FRAMEWORK_PATH take precedence, even for
+	 * absolute paths.  So we create a temporary symlink, and dlopen that
+	 * instead.
          */
-        libgl_filename = "libGL.system.dylib";
 
-        libgl_handle = dlopen(libgl_filename, RTLD_LOCAL | RTLD_NOW | RTLD_FIRST);
+        char temp_filename[] = "/tmp/tmp.XXXXXX";
+
+        if (mktemp(temp_filename) != NULL) {
+	    if (symlink(libgl_filename, temp_filename) == 0) {
+                libgl_handle = dlopen(temp_filename, RTLD_LOCAL | RTLD_NOW | RTLD_FIRST);
+                remove(temp_filename);
+            }
+        }
+
         if (!libgl_handle) {
-            OS::DebugMessage("error: couldn't load %s\n", libgl_filename);
+            OS::DebugMessage("apitrace: error: couldn't load %s\n", libgl_filename);
+            OS::Abort();
             return NULL;
         }
     }
@@ -100,7 +115,7 @@ static void * __dlsym(const char *symbol)
     result = dlsym(libgl_handle, symbol);
 
     if (result == dlsym(RTLD_SELF, symbol)) {
-        OS::DebugMessage("error: symbol lookup recursion\n");
+        OS::DebugMessage("apitrace: error: symbol lookup recursion\n");
         OS::Abort();
         return NULL;
     }