Mesa (master): util: Add function logger helpers

[Jakob Bornecrantz]

Module: Mesa
Branch: master
Commit: b7d2919e8e079f2ba77741a6b3f9d038b17cc799
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b7d2919e8e079f2ba77741a6b3f9d038b17cc799

Author: Jakob Bornecrantz <wallbraker at gmail.com>
Date:   Sun Jan 23 21:28:44 2011 +0100

util: Add function logger helpers

---

 src/gallium/auxiliary/util/u_debug.c |   35 ++++++++++++++++++++++++++++++++
 src/gallium/auxiliary/util/u_debug.h |   37 ++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/util/u_debug.c b/src/gallium/auxiliary/util/u_debug.c
index f4ad545..59b7613 100644
--- a/src/gallium/auxiliary/util/u_debug.c
+++ b/src/gallium/auxiliary/util/u_debug.c
@@ -359,6 +359,41 @@ const char *u_prim_name( unsigned prim )
 
 
 
+#ifdef DEBUG
+int fl_indent = 0;
+const char* fl_function[1024];
+
+int debug_funclog_enter(const char* f, const int line, const char* file)
+{
+   int i;
+
+   for (i = 0; i < fl_indent; i++)
+      debug_printf("  ");
+   debug_printf("%s\n", f);
+
+   assert(fl_indent < 1023);
+   fl_function[fl_indent++] = f;
+
+   return 0;
+}
+
+void debug_funclog_exit(const char* f, const int line, const char* file)
+{
+   --fl_indent;
+   assert(fl_indent >= 0);
+   assert(fl_function[fl_indent] == f);
+}
+
+void debug_funclog_enter_exit(const char* f, const int line, const char* file)
+{
+   int i;
+   for (i = 0; i < fl_indent; i++)
+      debug_printf("  ");
+   debug_printf("%s\n", f);
+}
+#endif
+
+
 
 #ifdef DEBUG
 /**
diff --git a/src/gallium/auxiliary/util/u_debug.h b/src/gallium/auxiliary/util/u_debug.h
index 1c9624e..c47c13c 100644
--- a/src/gallium/auxiliary/util/u_debug.h
+++ b/src/gallium/auxiliary/util/u_debug.h
@@ -280,6 +280,43 @@ debug_dump_flags(const struct debug_named_value *names,
 
 
 /**
+ * Function enter exit loggers
+ */
+#ifdef DEBUG
+int debug_funclog_enter(const char* f, const int line, const char* file);
+void debug_funclog_exit(const char* f, const int line, const char* file);
+void debug_funclog_enter_exit(const char* f, const int line, const char* file);
+
+#define DEBUG_FUNCLOG_ENTER() \
+   int __debug_decleration_work_around = \
+      debug_funclog_enter(__FUNCTION__, __LINE__, __FILE__)
+#define DEBUG_FUNCLOG_EXIT() \
+   do { \
+      (void)__debug_decleration_work_around; \
+      debug_funclog_exit(__FUNCTION__, __LINE__, __FILE__); \
+      return; \
+   } while(0)
+#define DEBUG_FUNCLOG_EXIT_RET(ret) \
+   do { \
+      (void)__debug_decleration_work_around; \
+      debug_funclog_exit(__FUNCTION__, __LINE__, __FILE__); \
+      return ret; \
+   } while(0)
+#define DEBUG_FUNCLOG_ENTER_EXIT() \
+   debug_funclog_enter_exit(__FUNCTION__, __LINE__, __FILE__)
+
+#else
+#define DEBUG_FUNCLOG_ENTER() \
+   int __debug_decleration_work_around
+#define DEBUG_FUNCLOG_EXIT() \
+   do { (void)__debug_decleration_work_around; return; } while(0)
+#define DEBUG_FUNCLOG_EXIT_RET(ret) \
+   do { (void)__debug_decleration_work_around; return ret; } while(0)
+#define DEBUG_FUNCLOG_ENTER_EXIT()
+#endif
+
+
+/**
  * Get option.
  * 
  * It is an alias for getenv on Linux.