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Improve debugging printouts. When G_MAIN_POLL_DEBUG is defined, we check

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2008-05-17  Tor Lillqvist  <tml@novell.com>

	* glib/gmain.c: Improve debugging printouts. When
	G_MAIN_POLL_DEBUG is defined, we check for an environment variable
	of the same name to decide whether to print out debugging
	information or not. G_MAIN_POLL_DEBUG is always defined on Windows
	as there is more often a need to debug this stuff there. On Unix
	the definition has to be uncommented (or done on the compile
	command line).


svn path=/trunk/; revision=6897
This commit is contained in:
Tor Lillqvist 2008-05-17 02:25:59 +00:00 committed by Tor Lillqvist
parent b9cf431b95
commit 2ded70ee94
2 changed files with 137 additions and 48 deletions
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10
ChangeLog
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@ -1,3 +1,13 @@
2008-05-17 Tor Lillqvist <tml@novell.com>
* glib/gmain.c: Improve debugging printouts. When
G_MAIN_POLL_DEBUG is defined, we check for an environment variable
of the same name to decide whether to print out debugging
information or not. G_MAIN_POLL_DEBUG is always defined on Windows
as there is more often a need to debug this stuff there. On Unix
the definition has to be uncommented (or done on the compile
command line).
2008-05-17 Tor Lillqvist <tml@novell.com>
* build: Don't include the "build" module with svn:externals any

93
glib/gmain.c
View File

@ -33,9 +33,18 @@
#include "config.h"
/* uncomment the next line to get poll() debugging info */
/* Uncomment the next line to enable debugging printouts if the
* environment variable G_MAIN_POLL_DEBUG is set to some value.
*/
/* #define G_MAIN_POLL_DEBUG */
#ifdef _WIN32
/* Always enable debugging printout on Windows, as it is more often
* needed there...
*/
#define G_MAIN_POLL_DEBUG
#endif
#include "glib.h"
#include "gthreadprivate.h"
#include <signal.h>
@ -80,6 +89,14 @@
#include "galias.h"
#ifdef G_MAIN_POLL_DEBUG
#ifdef G_OS_WIN32
#define GPOLLFD_FORMAT "%#x"
#else
#define GPOLLFD_FORMAT "%d"
#endif
#endif
/* Types */
typedef struct _GTimeoutSource GTimeoutSource;
@ -111,6 +128,10 @@ struct _GMainDispatch
GSList *dispatching_sources; /* stack of current sources */
};
#ifdef G_MAIN_POLL_DEBUG
static gboolean g_main_poll_debug = FALSE;
#endif
struct _GMainContext
{
#ifdef G_THREADS_ENABLED
@ -330,11 +351,21 @@ g_poll (GPollFD *fds,
MSG msg;
gint nhandles = 0;
#ifdef G_MAIN_POLL_DEBUG
if (g_main_poll_debug)
g_print ("g_poll: waiting for");
#endif
for (f = fds; f < &fds[nfds]; ++f)
if (f->fd >= 0)
{
if (f->fd == G_WIN32_MSG_HANDLE)
{
poll_msgs = TRUE;
#ifdef G_MAIN_POLL_DEBUG
if (g_main_poll_debug)
g_print (" MSG");
#endif
}
else if (nhandles == MAXIMUM_WAIT_OBJECTS)
{
g_warning (G_STRLOC ": Too many handles to wait for!\n");
@ -343,11 +374,16 @@ g_poll (GPollFD *fds,
else
{
#ifdef G_MAIN_POLL_DEBUG
g_print ("g_poll: waiting for %#x\n", f->fd);
if (g_main_poll_debug)
g_print (" %#x", f->fd);
#endif
handles[nhandles++] = (HANDLE) f->fd;
}
}
#ifdef G_MAIN_POLL_DEBUG
if (g_main_poll_debug)
g_print ("\n");
#endif
if (timeout == -1)
timeout = INFINITE;
@ -358,6 +394,7 @@ g_poll (GPollFD *fds,
* -> First PeekMessage
*/
#ifdef G_MAIN_POLL_DEBUG
if (g_main_poll_debug)
g_print ("PeekMessage\n");
#endif
if (PeekMessage (&msg, NULL, 0, 0, PM_NOREMOVE))
@ -368,6 +405,7 @@ g_poll (GPollFD *fds,
* -> Use MsgWaitForMultipleObjectsEx
*/
#ifdef G_MAIN_POLL_DEBUG
if (g_main_poll_debug)
g_print ("MsgWaitForMultipleObjectsEx(%d, %d)\n", nhandles, timeout);
#endif
ready = MsgWaitForMultipleObjectsEx (nhandles, handles, timeout,
@ -398,6 +436,7 @@ g_poll (GPollFD *fds,
* -> Use WaitForMultipleObjectsEx
*/
#ifdef G_MAIN_POLL_DEBUG
if (g_main_poll_debug)
g_print ("WaitForMultipleObjectsEx(%d, %d)\n", nhandles, timeout);
#endif
ready = WaitForMultipleObjectsEx (nhandles, handles, FALSE, timeout, TRUE);
@ -410,6 +449,7 @@ g_poll (GPollFD *fds,
}
#ifdef G_MAIN_POLL_DEBUG
if (g_main_poll_debug)
g_print ("wait returns %ld%s\n",
ready,
(ready == WAIT_FAILED ? " (WAIT_FAILED)" :
@ -441,6 +481,7 @@ g_poll (GPollFD *fds,
{
f->revents = f->events;
#ifdef G_MAIN_POLL_DEBUG
if (g_main_poll_debug)
g_print ("g_poll: got event %#x\n", f->fd);
#endif
}
@ -641,6 +682,7 @@ g_main_context_init_pipe (GMainContext *context)
context->wake_up_rec.fd = (gint) context->wake_up_semaphore;
context->wake_up_rec.events = G_IO_IN;
# ifdef G_MAIN_POLL_DEBUG
if (g_main_poll_debug)
g_print ("wake-up semaphore: %#x\n", (guint) context->wake_up_semaphore);
# endif
# endif
@ -716,6 +758,12 @@ g_main_context_new (void)
G_LOCK (main_context_list);
main_context_list = g_slist_append (main_context_list, context);
#ifdef G_MAIN_POLL_DEBUG
if (g_main_poll_debug)
g_print ("created context=%p\n", context);
#endif
G_UNLOCK (main_context_list);
return context;
@ -738,7 +786,13 @@ g_main_context_default (void)
G_LOCK (main_loop);
if (!default_main_context)
{
default_main_context = g_main_context_new ();
#ifdef G_MAIN_POLL_DEBUG
if (g_main_poll_debug)
g_print ("default context=%p\n", default_main_context);
#endif
}
G_UNLOCK (main_loop);
@ -2724,6 +2778,21 @@ g_main_loop_new (GMainContext *context,
gboolean is_running)
{
GMainLoop *loop;
#ifdef G_MAIN_POLL_DEBUG
static gboolean beenhere = FALSE;
#endif
#ifdef G_MAIN_POLL_DEBUG
G_LOCK (main_loop);
if (!beenhere)
{
beenhere = TRUE;
if (getenv ("G_MAIN_POLL_DEBUG") != NULL)
g_main_poll_debug = TRUE;
}
G_UNLOCK (main_loop);
#endif
if (!context)
context = g_main_context_default();
@ -2939,8 +3008,12 @@ g_main_context_poll (GMainContext *context,
if (n_fds || timeout != 0)
{
#ifdef G_MAIN_POLL_DEBUG
g_print ("g_main_poll(%d) timeout: %d\n", n_fds, timeout);
if (g_main_poll_debug)
{
g_print ("polling context=%p n=%d timeout=%d\n",
context, n_fds, timeout);
poll_timer = g_timer_new ();
}
#endif
LOCK_CONTEXT (context);
@ -2959,6 +3032,8 @@ g_main_context_poll (GMainContext *context,
}
#ifdef G_MAIN_POLL_DEBUG
if (g_main_poll_debug)
{
LOCK_CONTEXT (context);
g_print ("g_main_poll(%d) timeout: %d - elapsed %12.10f seconds",
@ -2967,14 +3042,17 @@ g_main_context_poll (GMainContext *context,
g_timer_elapsed (poll_timer, NULL));
g_timer_destroy (poll_timer);
pollrec = context->poll_records;
while (pollrec != NULL)
{
i = 0;
while (i < n_fds)
{
if (pollrec->fd->events)
if (fds[i].fd == pollrec->fd->fd &&
pollrec->fd->events &&
fds[i].revents)
{
if (fds[i].revents)
{
g_print (" [%d:", fds[i].fd);
g_print (" [" GPOLLFD_FORMAT " :", fds[i].fd);
if (fds[i].revents & G_IO_IN)
g_print ("i");
if (fds[i].revents & G_IO_OUT)
@ -2996,6 +3074,7 @@ g_main_context_poll (GMainContext *context,
g_print ("\n");
UNLOCK_CONTEXT (context);
}
#endif
} /* if (n_fds || timeout != 0) */
}