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mutter-performance-source/cogl/cogl/cogl-trace.c
Ivan Molodetskikh 1f22b3a2e2 cogl/trace: Add COGL_TRACE_MESSAGE 
Emits a formatted message at the current time without a duration.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3417>
2023-12-06 16:12:58 +00:00

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/*
* Copyright 2018 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* 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 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.
*
* SPDX-License-Identifier: MIT
*
*/
#include "config.h"
#include "cogl/cogl-trace.h"
#ifdef HAVE_PROFILER
#include <sysprof-capture.h>
#include <sysprof-capture-writer.h>
#include <sysprof-clock.h>
#include <syscall.h>
#include <sys/types.h>
#include <unistd.h>
#define COGL_TRACE_OUTPUT_FILE "cogl-trace-sp-capture.syscap"
#define BUFFER_LENGTH (4096 * 4)
struct _CoglTraceContext
{
gatomicrefcount ref_count;
SysprofCaptureWriter *writer;
};
typedef struct _CoglTraceThreadContext
{
int cpu_id;
GPid pid;
char *group;
CoglTraceContext *trace_context;
} CoglTraceThreadContext;
typedef struct
{
char *group;
CoglTraceContext *trace_context;
} TraceData;
static void cogl_trace_context_unref (CoglTraceContext *trace_context);
static void
trace_data_free (gpointer user_data)
{
TraceData *data = user_data;
g_clear_pointer (&data->group, g_free);
g_clear_pointer (&data->trace_context, cogl_trace_context_unref);
g_free (data);
}
static void cogl_trace_thread_context_free (gpointer data);
GPrivate cogl_trace_thread_data = G_PRIVATE_INIT (cogl_trace_thread_context_free);
CoglTraceContext *cogl_trace_context;
GMutex cogl_trace_mutex;
static CoglTraceContext *
cogl_trace_context_new (int fd,
const char *filename)
{
CoglTraceContext *context;
SysprofCaptureWriter *writer;
if (fd != -1)
{
g_debug ("Initializing trace context with fd=%d", fd);
writer = sysprof_capture_writer_new_from_fd (fd, BUFFER_LENGTH);
}
else if (filename != NULL)
{
g_debug ("Initializing trace context with filename='%s'", filename);
writer = sysprof_capture_writer_new (filename, BUFFER_LENGTH);
}
else
{
g_debug ("Initializing trace context with default filename");
writer = sysprof_capture_writer_new (COGL_TRACE_OUTPUT_FILE, BUFFER_LENGTH);
}
if (!writer)
return NULL;
context = g_new0 (CoglTraceContext, 1);
context->writer = writer;
g_atomic_ref_count_init (&context->ref_count);
return context;
}
static void
cogl_trace_context_unref (CoglTraceContext *trace_context)
{
if (g_atomic_ref_count_dec (&trace_context->ref_count))
{
if (trace_context->writer)
sysprof_capture_writer_flush (trace_context->writer);
g_clear_pointer (&trace_context->writer, sysprof_capture_writer_unref);
g_free (trace_context);
}
}
static CoglTraceContext *
cogl_trace_context_ref (CoglTraceContext *trace_context)
{
g_atomic_ref_count_inc (&trace_context->ref_count);
return trace_context;
}
static gboolean
setup_trace_context (int fd,
const char *filename,
GError **error)
{
g_autoptr (GMutexLocker) locker = NULL;
locker = g_mutex_locker_new (&cogl_trace_mutex);
if (cogl_trace_context)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Trace context already setup");
return FALSE;
}
cogl_trace_context = cogl_trace_context_new (fd, filename);
if (!cogl_trace_context)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to setup trace context");
return FALSE;
}
return TRUE;
}
static CoglTraceThreadContext *
cogl_trace_thread_context_new (const char *group,
CoglTraceContext *trace_context)
{
CoglTraceThreadContext *thread_context;
pid_t tid;
tid = (pid_t) syscall (SYS_gettid);
thread_context = g_new0 (CoglTraceThreadContext, 1);
thread_context->cpu_id = -1;
thread_context->pid = getpid ();
thread_context->group =
group ? g_strdup (group) : g_strdup_printf ("t:%d", tid);
thread_context->trace_context = cogl_trace_context_ref (trace_context);
return thread_context;
}
static gboolean
enable_tracing_idle_callback (gpointer user_data)
{
CoglTraceThreadContext *thread_context =
g_private_get (&cogl_trace_thread_data);
TraceData *data = user_data;
if (thread_context)
{
g_warning ("Tracing already enabled");
return G_SOURCE_REMOVE;
}
thread_context = cogl_trace_thread_context_new (data->group,
data->trace_context);
g_private_set (&cogl_trace_thread_data, thread_context);
return G_SOURCE_REMOVE;
}
static void
cogl_trace_thread_context_free (gpointer data)
{
CoglTraceThreadContext *thread_context = data;
if (!thread_context)
return;
g_free (thread_context->group);
g_free (thread_context);
}
static gboolean
disable_tracing_idle_callback (gpointer user_data)
{
CoglTraceThreadContext *thread_context =
g_private_get (&cogl_trace_thread_data);
if (!thread_context)
{
g_warning ("Tracing not enabled");
return G_SOURCE_REMOVE;
}
g_private_replace (&cogl_trace_thread_data, NULL);
return G_SOURCE_REMOVE;
}
gboolean
cogl_start_tracing_with_path (const char *filename,
GError **error)
{
return setup_trace_context (-1, filename, error);
}
gboolean
cogl_start_tracing_with_fd (int fd,
GError **error)
{
return setup_trace_context (fd, NULL, error);
}
void
cogl_stop_tracing (void)
{
g_mutex_lock (&cogl_trace_mutex);
g_clear_pointer (&cogl_trace_context, cogl_trace_context_unref);
g_mutex_unlock (&cogl_trace_mutex);
}
void
cogl_set_tracing_enabled_on_thread (GMainContext *main_context,
const char *group)
{
TraceData *data;
g_return_if_fail (cogl_trace_context);
data = g_new0 (TraceData, 1);
data->group = group ? strdup (group) : NULL;
data->trace_context = cogl_trace_context_ref (cogl_trace_context);
if (main_context == g_main_context_get_thread_default ())
{
enable_tracing_idle_callback (data);
trace_data_free (data);
}
else
{
GSource *source;
source = g_idle_source_new ();
g_source_set_callback (source,
enable_tracing_idle_callback,
data,
trace_data_free);
g_source_attach (source, main_context);
g_source_unref (source);
}
}
void
cogl_set_tracing_disabled_on_thread (GMainContext *main_context)
{
if (g_main_context_get_thread_default () == main_context)
{
disable_tracing_idle_callback (NULL);
}
else
{
GSource *source;
source = g_idle_source_new ();
g_source_set_callback (source, disable_tracing_idle_callback, NULL, NULL);
g_source_attach (source, main_context);
g_source_unref (source);
}
}
static void
cogl_trace_end_with_description (CoglTraceHead *head,
const char *description)
{
SysprofTimeStamp end_time;
CoglTraceContext *trace_context;
CoglTraceThreadContext *trace_thread_context;
end_time = g_get_monotonic_time () * 1000;
trace_thread_context = g_private_get (&cogl_trace_thread_data);
trace_context = trace_thread_context->trace_context;
g_mutex_lock (&cogl_trace_mutex);
if (!sysprof_capture_writer_add_mark (trace_context->writer,
head->begin_time,
trace_thread_context->cpu_id,
trace_thread_context->pid,
(uint64_t) end_time - head->begin_time,
trace_thread_context->group,
head->name,
description))
{
/* XXX: g_main_context_get_thread_default() might be wrong, it probably
* needs to store the GMainContext in CoglTraceThreadContext when creating
* and use it here.
*/
if (errno == EPIPE)
cogl_set_tracing_disabled_on_thread (g_main_context_get_thread_default ());
}
g_mutex_unlock (&cogl_trace_mutex);
}
void
cogl_trace_end (CoglTraceHead *head)
{
cogl_trace_end_with_description (head, head->description);
g_free (head->description);
}
void
cogl_trace_mark (const char *name,
const char *description)
{
SysprofTimeStamp time;
CoglTraceContext *trace_context;
CoglTraceThreadContext *trace_thread_context;
time = g_get_monotonic_time () * 1000;
trace_thread_context = g_private_get (&cogl_trace_thread_data);
trace_context = trace_thread_context->trace_context;
g_mutex_lock (&cogl_trace_mutex);
if (!sysprof_capture_writer_add_mark (trace_context->writer,
time,
trace_thread_context->cpu_id,
trace_thread_context->pid,
0,
trace_thread_context->group,
name,
description))
{
/* XXX: g_main_context_get_thread_default() might be wrong, it probably
* needs to store the GMainContext in CoglTraceThreadContext when creating
* and use it here.
*/
if (errno == EPIPE)
cogl_set_tracing_disabled_on_thread (g_main_context_get_thread_default ());
}
g_mutex_unlock (&cogl_trace_mutex);
}
void
cogl_trace_describe (CoglTraceHead *head,
const char *description)
{
if (head->description)
{
char *old_description = head->description;
head->description =
g_strdup_printf ("%s, %s", old_description, description);
g_free (old_description);
}
else
head->description = g_strdup (description);
}
#else
#include <string.h>
#include <stdio.h>
gboolean
cogl_start_tracing_with_path (const char *filename,
GError **error)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
"Tracing disabled at build time");
return FALSE;
}
gboolean
cogl_start_tracing_with_fd (int fd,
GError **error)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
"Tracing disabled at build time");
return FALSE;
}
void
cogl_stop_tracing (void)
{
fprintf (stderr, "Tracing not enabled");
}
void
cogl_set_tracing_enabled_on_thread (void *data,
const char *group)
{
fprintf (stderr, "Tracing not enabled");
}
void
cogl_set_tracing_disabled_on_thread (void *data)
{
fprintf (stderr, "Tracing not enabled");
}
#endif /* HAVE_PROFILER */
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