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cogl/trace: Add scoped trace anchors

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A trace "anchor" is a trace head (CoglTraceHead) that is placed in a
certain scope (e.g. function scope), but then only triggered in another
scope, e.g. a condition.

This makes it possible to have optional trace instrumentation, that is
enabled only given e.g. a debug flag.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1700>
This commit is contained in:
Jonas Ådahl 2021-02-02 23:32:27 +01:00
parent b1ac1327cd
commit 8bd75747b1
1 changed files with 14 additions and 0 deletions
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14
cogl/cogl/cogl-trace.h
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@ -111,6 +111,18 @@ cogl_auto_trace_end_helper (CoglTraceHead **head)
if (g_private_get (&cogl_trace_thread_data)) \
cogl_trace_describe (&CoglTrace##Name, description);
#define COGL_TRACE_SCOPED_ANCHOR(Name) \
CoglTraceHead G_GNUC_UNUSED CoglTrace##Name = { 0 }; \
__attribute__((cleanup (cogl_auto_trace_end_helper))) \
CoglTraceHead *ScopedCoglTrace##Name = NULL; \
#define COGL_TRACE_BEGIN_ANCHORED(Name, name) \
if (g_private_get (&cogl_trace_thread_data)) \
{ \
cogl_trace_begin (&CoglTrace##Name, name); \
ScopedCoglTrace##Name = &CoglTrace##Name; \
}
#else /* COGL_HAS_TRACING */
#include <stdio.h>
@ -119,6 +131,8 @@ cogl_auto_trace_end_helper (CoglTraceHead **head)
#define COGL_TRACE_END(Name) (void) 0
#define COGL_TRACE_BEGIN_SCOPED(Name, name) (void) 0
#define COGL_TRACE_DESCRIBE(Name, description) (void) 0
#define COGL_TRACE_ANCHOR(Name) (void) 0
#define COGL_TRACE_BEGIN_ANCHORED(Name, name) (void) 0
COGL_EXPORT void
cogl_set_tracing_enabled_on_thread_with_fd (void *data,