Changeset: 19095a899246 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=19095a899246
Modified Files:
gdk/gdk_tracer.c
Branch: gdk_tracer
Log Message:
Fixed a bug that was causing mserver5 to hang and added locks to flush_buffer -
it can be called separately
diffs (190 lines):
diff --git a/gdk/gdk_tracer.c b/gdk/gdk_tracer.c
--- a/gdk/gdk_tracer.c
+++ b/gdk/gdk_tracer.c
@@ -28,8 +28,9 @@
#undef free
#endif
-static gdk_tracer tracer = { .allocated_size = 0, .id = 0 };
-static MT_Lock lock = MT_LOCK_INITIALIZER("GDKtracer");
+static gdk_tracer tracer = { .id = 0, .allocated_size = 0 };
+static gdk_tracer *active_tracer = &tracer;
+MT_Lock lock = MT_LOCK_INITIALIZER("GDKtracer_1");
static FILE *output_file;
static bool USE_STREAM = true;
@@ -383,52 +384,64 @@ GDKtracer_reset_adapter(void)
gdk_return
GDKtracer_log(LOG_LEVEL level, char *fmt, ...)
{
- gdk_tracer *fill_tracer;
int bytes_written = 0;
MT_lock_set(&lock);
+
+ va_list va;
+ va_start(va, fmt);
+ bytes_written = _GDKtracer_fill_tracer(active_tracer, fmt, va);
+ va_end(va);
+
+ if(bytes_written >= 0)
{
- fill_tracer = &tracer;
-
- va_list va;
- va_start(va, fmt);
- bytes_written = _GDKtracer_fill_tracer(fill_tracer, fmt, va);
- va_end(va);
-
- if(bytes_written < 0)
+ // The message fits the buffer OR the buffer is empty but the message
does not fit (we cut it off)
+ if(bytes_written < (BUFFER_SIZE - active_tracer->allocated_size) ||
+ active_tracer->allocated_size == 0)
{
- // Catch the exception and use the fallback mechanism for logging
- va_list va;
- va_start(va, fmt);
- GDK_TRACER_OSTREAM(fmt, va);
- va_end(va);
+ active_tracer->allocated_size += bytes_written;
+ MT_lock_unset(&lock);
}
else
{
- // The message fits the buffer OR the buffer is empty but the
message does not fit (we cut it off)
- if(bytes_written < (BUFFER_SIZE - fill_tracer->allocated_size) ||
- fill_tracer->allocated_size == 0)
+ MT_lock_unset(&lock);
+
+ GDKtracer_flush_buffer();
+
+ MT_lock_set(&lock);
+ va_list va;
+ va_start(va, fmt);
+ bytes_written = _GDKtracer_fill_tracer(active_tracer, fmt, va);
+ va_end(va);
+
+ if(bytes_written >= 0)
{
- fill_tracer->allocated_size += bytes_written;
+ // The second buffer will always be empty at start
+ // So if the message does not fit we cut it off
+ // message might be > BUFFER_SIZE
+ active_tracer->allocated_size += bytes_written;
+ MT_lock_unset(&lock);
}
else
{
- GDKtracer_flush_buffer();
+ MT_lock_unset(&lock);
- // Write to the new tracer
+ // Fallback logging mechanism
va_list va;
va_start(va, fmt);
- bytes_written = _GDKtracer_fill_tracer(fill_tracer, fmt, va);
+ GDK_TRACER_OSTREAM(fmt, va);
va_end(va);
-
- // The second buffer will always be empty at start
- // So if the message does not fit we cut it off
- // message might be > BUFFER_SIZE
- fill_tracer->allocated_size += bytes_written;
}
}
}
- MT_lock_unset(&lock);
+ else
+ {
+ // Fallback logging mechanism
+ va_list va;
+ va_start(va, fmt);
+ GDK_TRACER_OSTREAM("%s", fmt);
+ va_end(va);
+ }
// Flush the current buffer in case the event is
// important depending on the flush-level
@@ -450,43 +463,57 @@ GDKtracer_log(LOG_LEVEL level, char *fmt
gdk_return
GDKtracer_flush_buffer(void)
{
- // Select a tracer
- gdk_tracer *fl_tracer = &tracer;
-
// No reason to flush a buffer with no content
- if(fl_tracer->allocated_size == 0)
+ MT_lock_set(&lock);
+ if(active_tracer->allocated_size == 0)
+ {
+ MT_lock_unset(&lock);
return GDK_SUCCEED;
+ }
+ MT_lock_unset(&lock);
if(ATOMIC_GET(&CUR_ADAPTER) == BASIC)
{
- // Check if file is open - if not send the output to GDKstdout. There
are cases that
- // this is needed - e.g: on startup of mserver5 GDKmalloc is called
before GDKinit.
- // In GDKinit GDKtracer is getting initialized (open_file and
initialize log level
- // per component). Since the file is not open yet and there is an
assert, we need
- // to do something - and as a backup plan we send the logs to
GDKstdout.
- if(output_file)
+ MT_lock_set(&lock);
{
- size_t nitems = 1;
- size_t w = fwrite(&fl_tracer->buffer, fl_tracer->allocated_size,
nitems, output_file);
+ // Check if file is open - if not send the output to GDKstdout.
There are cases that
+ // this is needed - e.g: on startup of mserver5 GDKmalloc is
called before GDKinit.
+ // In GDKinit GDKtracer is getting initialized (open_file and
initialize log level
+ // per component). Since the file is not open yet and there is an
assert, we need
+ // to do something - and as a backup plan we send the logs to
GDKstdout.
+ if(output_file)
+ {
+ size_t nitems = 1;
+ size_t w = fwrite(&active_tracer->buffer,
active_tracer->allocated_size, nitems, output_file);
- if(w == nitems)
- {
- USE_STREAM = false;
- fflush(output_file);
+ if(w == nitems)
+ {
+ USE_STREAM = false;
+ fflush(output_file);
+ }
}
- }
- // fwrite failed for whatever reason
- // (e.g: disk is full) fallback to stream
- if(USE_STREAM)
- GDK_TRACER_OSTREAM("%s", fl_tracer->buffer);
-
- // Reset buffer
- memset(fl_tracer->buffer, 0, BUFFER_SIZE);
- fl_tracer->allocated_size = 0;
+ // fwrite failed for whatever reason
+ // (e.g: disk is full) fallback to stream
+ if(USE_STREAM)
+ {
+ GDK_TRACER_OSTREAM("%s", active_tracer->buffer);
+ }
+
+ // Reset buffer
+ memset(active_tracer->buffer, 0, BUFFER_SIZE);
+ active_tracer->allocated_size = 0;
+ }
+ MT_lock_unset(&lock);
}
else
{
+ MT_lock_set(&lock);
+ memset(active_tracer->buffer, 0, BUFFER_SIZE);
+ active_tracer->allocated_size = 0;
+ MT_lock_unset(&lock);
+
+ /* WHY THE FCK YOU GET PRINTED 7 TIMES? */
GDK_TRACER_OSTREAM("Using adapter: %s\n", ADAPTER_STR[(int)
ATOMIC_GET(&CUR_ADAPTER)]);
}
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