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libsysprof-capture: add flush_delay for auto flushing

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This can be useful in scenarios where you need to kill the application
using a signal so that data is not lost in the buffer.
This commit is contained in:
Christian Hergert
2019-06-05 15:12:17 -07:00
parent 0f85e10368
commit 97ec24ab42
2 changed files with 45 additions and 0 deletions
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41
src/libsysprof-capture/sysprof-capture-writer.c
View File

@ -133,6 +133,9 @@ struct _SysprofCaptureWriter
gsize pos;
gsize len;
/* GSource for periodic flush */
GSource *periodic_flush;
/* counter id sequence */
gint next_counter_id;
@ -164,6 +167,8 @@ sysprof_capture_writer_finalize (SysprofCaptureWriter *self)
{
if (self != NULL)
{
g_clear_pointer (&self->periodic_flush, g_source_destroy);
sysprof_capture_writer_flush (self);
if (self->fd != -1)
@ -1469,3 +1474,39 @@ sysprof_capture_writer_add_file_fd (SysprofCaptureWriter *self,
return TRUE;
}
static gboolean
sysprof_capture_writer_auto_flush_cb (SysprofCaptureWriter *self)
{
g_assert (self != NULL);
sysprof_capture_writer_flush (self);
return G_SOURCE_CONTINUE;
}
void
sysprof_capture_writer_set_flush_delay (SysprofCaptureWriter *self,
GMainContext *main_context,
guint timeout_seconds)
{
GSource *source;
g_return_if_fail (self != NULL);
g_clear_pointer (&self->periodic_flush, g_source_destroy);
if (timeout_seconds == 0)
return;
source = g_timeout_source_new_seconds (timeout_seconds);
g_source_set_name (source, "[sysprof-capture-writer-flush]");
g_source_set_priority (source, G_PRIORITY_LOW + 100);
g_source_set_callback (source,
(GSourceFunc) sysprof_capture_writer_auto_flush_cb,
self, NULL);
self->periodic_flush = g_steal_pointer (&source);
g_source_attach (self->periodic_flush, main_context);
}

4
src/libsysprof-capture/sysprof-capture-writer.h
View File

@ -81,6 +81,10 @@ SYSPROF_AVAILABLE_IN_ALL
void sysprof_capture_writer_stat (SysprofCaptureWriter *self,
SysprofCaptureStat *stat);
SYSPROF_AVAILABLE_IN_ALL
void sysprof_capture_writer_set_flush_delay (SysprofCaptureWriter *self,
GMainContext *main_context,
guint timeout_seconds);
SYSPROF_AVAILABLE_IN_ALL
gboolean sysprof_capture_writer_add_file (SysprofCaptureWriter *self,
gint64 time,
gint cpu,