diff options
author | Andy Lanoix <alanoix@src.gnome.org> | 2003-06-07 20:31:28 +0000 |
---|---|---|
committer | Andy Lanoix <alanoix@src.gnome.org> | 2003-06-07 20:31:28 +0000 |
commit | be76dd63f9c7f42a35ed89ebb5616858ab0823c5 (patch) | |
tree | d43d7b3cdb3efa176f799992ec8127535c6bc457 | |
parent | a495b2cb033104424987955217647d8e921d490f (diff) | |
download | glib-be76dd63f9c7f42a35ed89ebb5616858ab0823c5.tar.gz glib-be76dd63f9c7f42a35ed89ebb5616858ab0823c5.tar.bz2 glib-be76dd63f9c7f42a35ed89ebb5616858ab0823c5.zip |
Resolved thread deadlocks in socket ichannel code to support
* glib/giowin32.c: Resolved thread deadlocks in socket
ichannel code to support Add-Cancel-Add watch functionality
on windows. Also cleaned up socket error handling to not
segfault and do the right thing.
-rw-r--r-- | ChangeLog | 7 | ||||
-rw-r--r-- | ChangeLog.pre-2-10 | 7 | ||||
-rw-r--r-- | ChangeLog.pre-2-12 | 7 | ||||
-rw-r--r-- | ChangeLog.pre-2-4 | 7 | ||||
-rw-r--r-- | ChangeLog.pre-2-6 | 7 | ||||
-rw-r--r-- | ChangeLog.pre-2-8 | 7 | ||||
-rw-r--r-- | glib/giowin32.c | 262 |
7 files changed, 233 insertions, 71 deletions
@@ -1,3 +1,10 @@ +Sat Jun 6 16:18:10 2003 Andrew Lanoix <alanoix@umich.edu> + + * glib/giowin32.c: Resolved thread deadlocks in socket + ichannel code to support Add-Cancel-Add watch functionality + on windows. Also cleaned up socket error handling to not + segfault and do the right thing. + Fri Jun 6 10:24:23 2003 Hidetoshi Tajima <hidetoshi.tajima@sun.com> * m4macros/glib-gettext.m4: Test for Solaris native gettext diff --git a/ChangeLog.pre-2-10 b/ChangeLog.pre-2-10 index 1d1cccb6f..ceb9ec99f 100644 --- a/ChangeLog.pre-2-10 +++ b/ChangeLog.pre-2-10 @@ -1,3 +1,10 @@ +Sat Jun 6 16:18:10 2003 Andrew Lanoix <alanoix@umich.edu> + + * glib/giowin32.c: Resolved thread deadlocks in socket + ichannel code to support Add-Cancel-Add watch functionality + on windows. Also cleaned up socket error handling to not + segfault and do the right thing. + Fri Jun 6 10:24:23 2003 Hidetoshi Tajima <hidetoshi.tajima@sun.com> * m4macros/glib-gettext.m4: Test for Solaris native gettext diff --git a/ChangeLog.pre-2-12 b/ChangeLog.pre-2-12 index 1d1cccb6f..ceb9ec99f 100644 --- a/ChangeLog.pre-2-12 +++ b/ChangeLog.pre-2-12 @@ -1,3 +1,10 @@ +Sat Jun 6 16:18:10 2003 Andrew Lanoix <alanoix@umich.edu> + + * glib/giowin32.c: Resolved thread deadlocks in socket + ichannel code to support Add-Cancel-Add watch functionality + on windows. Also cleaned up socket error handling to not + segfault and do the right thing. + Fri Jun 6 10:24:23 2003 Hidetoshi Tajima <hidetoshi.tajima@sun.com> * m4macros/glib-gettext.m4: Test for Solaris native gettext diff --git a/ChangeLog.pre-2-4 b/ChangeLog.pre-2-4 index 1d1cccb6f..ceb9ec99f 100644 --- a/ChangeLog.pre-2-4 +++ b/ChangeLog.pre-2-4 @@ -1,3 +1,10 @@ +Sat Jun 6 16:18:10 2003 Andrew Lanoix <alanoix@umich.edu> + + * glib/giowin32.c: Resolved thread deadlocks in socket + ichannel code to support Add-Cancel-Add watch functionality + on windows. Also cleaned up socket error handling to not + segfault and do the right thing. + Fri Jun 6 10:24:23 2003 Hidetoshi Tajima <hidetoshi.tajima@sun.com> * m4macros/glib-gettext.m4: Test for Solaris native gettext diff --git a/ChangeLog.pre-2-6 b/ChangeLog.pre-2-6 index 1d1cccb6f..ceb9ec99f 100644 --- a/ChangeLog.pre-2-6 +++ b/ChangeLog.pre-2-6 @@ -1,3 +1,10 @@ +Sat Jun 6 16:18:10 2003 Andrew Lanoix <alanoix@umich.edu> + + * glib/giowin32.c: Resolved thread deadlocks in socket + ichannel code to support Add-Cancel-Add watch functionality + on windows. Also cleaned up socket error handling to not + segfault and do the right thing. + Fri Jun 6 10:24:23 2003 Hidetoshi Tajima <hidetoshi.tajima@sun.com> * m4macros/glib-gettext.m4: Test for Solaris native gettext diff --git a/ChangeLog.pre-2-8 b/ChangeLog.pre-2-8 index 1d1cccb6f..ceb9ec99f 100644 --- a/ChangeLog.pre-2-8 +++ b/ChangeLog.pre-2-8 @@ -1,3 +1,10 @@ +Sat Jun 6 16:18:10 2003 Andrew Lanoix <alanoix@umich.edu> + + * glib/giowin32.c: Resolved thread deadlocks in socket + ichannel code to support Add-Cancel-Add watch functionality + on windows. Also cleaned up socket error handling to not + segfault and do the right thing. + Fri Jun 6 10:24:23 2003 Hidetoshi Tajima <hidetoshi.tajima@sun.com> * m4macros/glib-gettext.m4: Test for Solaris native gettext diff --git a/glib/giowin32.c b/glib/giowin32.c index a7277b731..d6b38827c 100644 --- a/glib/giowin32.c +++ b/glib/giowin32.c @@ -4,7 +4,7 @@ * giowin32.c: IO Channels for Win32. * Copyright 1998 Owen Taylor and Tor Lillqvist * Copyright 1999-2000 Tor Lillqvist and Craig Setera - * Copyright 2001 Andrew Lanoix + * Copyright 2001-2003 Andrew Lanoix * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -110,6 +110,8 @@ struct _GIOWin32Channel { /* Following fields used by socket channels */ GSList *watches; HANDLE data_avail_noticed_event; + gint reset_send; /* socket used to send data so select_thread() can reset/re-loop */ + gint reset_recv; /* socket used to recv data so select_thread() can reset/re-loop */ }; #define LOCK(mutex) EnterCriticalSection (&mutex) @@ -340,6 +342,71 @@ create_thread (GIOWin32Channel *channel, WaitForSingleObject (channel->space_avail_event, INFINITE); } +static void +init_reset_sockets(GIOWin32Channel *channel) +{ + struct sockaddr_in local, local2, server; + unsigned int addr; + int len; + struct hostent *hp; + + channel->reset_send = (gint) socket(AF_INET, SOCK_DGRAM, 0); + if (channel->reset_send == INVALID_SOCKET) + { + g_warning (G_STRLOC ": Error creating reset_send socket: %s\n", + g_win32_error_message (WSAGetLastError ())); + } + + local.sin_family = AF_INET; + local.sin_port = 0; + local.sin_addr.S_un.S_addr = htonl(INADDR_ANY); + + if (bind(channel->reset_send, (struct sockaddr *)&local, sizeof(local)) == SOCKET_ERROR) + { + g_warning (G_STRLOC ": Error binding to reset_send socket: %s\n", + g_win32_error_message (WSAGetLastError ())); + } + + local2.sin_family = AF_INET; + local2.sin_port = 0; + local2.sin_addr.S_un.S_addr = htonl(INADDR_ANY); + + channel->reset_recv = (gint) socket(AF_INET, SOCK_DGRAM, 0); + if (channel->reset_recv == INVALID_SOCKET) + { + g_warning (G_STRLOC ": Error creating reset_recv socket: %s\n", + g_win32_error_message (WSAGetLastError ())); + } + + if (bind(channel->reset_recv, (struct sockaddr *)&local2, sizeof(local)) == SOCKET_ERROR) + { + g_warning (G_STRLOC ": Error binding to reset_recv socket: %s\n", + g_win32_error_message (WSAGetLastError ())); + } + + len = sizeof(local2); + if (getsockname(channel->reset_recv, (struct sockaddr *)&local2, &len) == SOCKET_ERROR) + { + g_warning (G_STRLOC ": Error getsockname with reset_recv socket: %s\n", + g_win32_error_message (WSAGetLastError ())); + } + + addr = inet_addr("127.0.0.1"); + hp = gethostbyaddr((char *)&addr,4,AF_INET); + + memset(&server,0,sizeof(server)); + memcpy(&(server.sin_addr),hp->h_addr,hp->h_length); + server.sin_family = hp->h_addrtype; + server.sin_port = local2.sin_port; + + if (connect(channel->reset_send, (struct sockaddr *)&server, sizeof(server)) == SOCKET_ERROR) + { + g_warning (G_STRLOC ": connect to reset_recv socket: %s\n", + g_win32_error_message (WSAGetLastError ())); + } + +} + static GIOStatus buffer_read (GIOWin32Channel *channel, guchar *dest, @@ -417,6 +484,7 @@ select_thread (void *parameter) fd_set read_fds, write_fds, except_fds; GSList *tmp; int n; + char buffer[8]; g_io_channel_ref ((GIOChannel *)channel); @@ -437,30 +505,42 @@ select_thread (void *parameter) FD_ZERO (&read_fds); FD_ZERO (&write_fds); FD_ZERO (&except_fds); + FD_SET(channel->reset_recv, &read_fds); + LOCK (channel->mutex); tmp = channel->watches; while (tmp) - { - GIOWin32Watch *watch = (GIOWin32Watch *)tmp->data; - - if (watch->condition & (G_IO_IN | G_IO_HUP)) - FD_SET (channel->fd, &read_fds); - if (watch->condition & G_IO_OUT) - FD_SET (channel->fd, &write_fds); - if (watch->condition & G_IO_ERR) - FD_SET (channel->fd, &except_fds); + { + GIOWin32Watch *watch = (GIOWin32Watch *)tmp->data; + + if (watch->condition & (G_IO_IN | G_IO_HUP)) + FD_SET (channel->fd, &read_fds); + if (watch->condition & G_IO_OUT) + FD_SET (channel->fd, &write_fds); + if (watch->condition & G_IO_ERR) + FD_SET (channel->fd, &except_fds); - tmp = tmp->next; - } + tmp = tmp->next; + } + UNLOCK (channel->mutex); + if (channel->debug) - g_print ("select_thread %#x: calling select() for%s%s%s\n", - channel->thread_id, - (FD_ISSET (channel->fd, &read_fds) ? " IN" : ""), - (FD_ISSET (channel->fd, &write_fds) ? " OUT" : ""), - (FD_ISSET (channel->fd, &except_fds) ? " ERR" : "")); + g_print ("select_thread %#x: calling select() for%s%s%s\n", + channel->thread_id, + (FD_ISSET (channel->fd, &read_fds) ? " IN" : ""), + (FD_ISSET (channel->fd, &write_fds) ? " OUT" : ""), + (FD_ISSET (channel->fd, &except_fds) ? " ERR" : "")); n = select (1, &read_fds, &write_fds, &except_fds, NULL); + LOCK (channel->mutex); + if (channel->needs_close) + { + UNLOCK (channel->mutex); + break; + } + UNLOCK (channel->mutex); + if (n == SOCKET_ERROR) { if (channel->debug) @@ -469,60 +549,62 @@ select_thread (void *parameter) break; } + if (FD_ISSET(channel->reset_recv, &read_fds)) + { if (channel->debug) - g_print ("select_thread %#x: got%s%s%s\n", - channel->thread_id, - (FD_ISSET (channel->fd, &read_fds) ? " IN" : ""), - (FD_ISSET (channel->fd, &write_fds) ? " OUT" : ""), - (FD_ISSET (channel->fd, &except_fds) ? " ERR" : "")); - - if (FD_ISSET (channel->fd, &read_fds)) - channel->revents |= G_IO_IN; - if (FD_ISSET (channel->fd, &write_fds)) - channel->revents |= G_IO_OUT; - if (FD_ISSET (channel->fd, &except_fds)) - channel->revents |= G_IO_ERR; - - if (channel->debug) - g_print ("select_thread %#x: resetting data_avail_noticed, setting data_avail\n", - channel->thread_id); - ResetEvent (channel->data_avail_noticed_event); - SetEvent (channel->data_avail_event); + g_print ("select_thread %#x: re-looping\n", + channel->thread_id); + recv(channel->reset_recv, (char *)&buffer, (int) sizeof(buffer), 0); + continue; + } - LOCK (channel->mutex); - if (channel->needs_close) - { - UNLOCK (channel->mutex); - break; - } + if (channel->debug) + g_print ("select_thread %#x: got%s%s%s\n", + channel->thread_id, + (FD_ISSET (channel->fd, &read_fds) ? " IN" : ""), + (FD_ISSET (channel->fd, &write_fds) ? " OUT" : ""), + (FD_ISSET (channel->fd, &except_fds) ? " ERR" : "")); + + if (FD_ISSET (channel->fd, &read_fds)) + channel->revents |= G_IO_IN; + if (FD_ISSET (channel->fd, &write_fds)) + channel->revents |= G_IO_OUT; + if (FD_ISSET (channel->fd, &except_fds)) + channel->revents |= G_IO_ERR; + + if (channel->debug) + g_print ("select_thread %#x: resetting data_avail_noticed, setting data_avail\n", + channel->thread_id); + + LOCK (channel->mutex); + ResetEvent (channel->data_avail_noticed_event); + SetEvent (channel->data_avail_event); + if (channel->needs_close) + { UNLOCK (channel->mutex); + break; + } + UNLOCK (channel->mutex); - if (channel->debug) - g_print ("select_thread %#x: waiting for data_avail_noticed\n", - channel->thread_id); + if (channel->debug) + g_print ("select_thread %#x: waiting for data_avail_noticed\n", + channel->thread_id); - WaitForSingleObject (channel->data_avail_noticed_event, INFINITE); - if (channel->debug) - g_print ("select_thread %#x: got data_avail_noticed\n", + WaitForSingleObject (channel->data_avail_noticed_event, INFINITE); + if (channel->debug) + g_print ("select_thread %#x: got data_avail_noticed\n", channel->thread_id); } - - channel->running = FALSE; - LOCK (channel->mutex); - if (channel->fd != -1) - { - /* DO NOT close the fd here */ - channel->fd = -1; - } + LOCK (channel->mutex); + channel->running = FALSE; if (channel->debug) g_print ("select_thread %#x: got error, setting data_avail\n", channel->thread_id); SetEvent (channel->data_avail_event); - UNLOCK (channel->mutex); - g_io_channel_unref((GIOChannel *)channel); - + UNLOCK (channel->mutex); + /* No need to call _endthreadex(), the actual thread starter routine * in MSVCRT (see crt/src/threadex.c:_threadstartex) calls * _endthreadex() for us. @@ -561,8 +643,8 @@ g_io_win32_prepare (GSource *source, } else if (channel->type == G_IO_WIN32_SOCKET) { + LOCK (channel->mutex); channel->revents = 0; - if (channel->debug) g_print ("g_io_win32_prepare: for thread %#x, setting data_avail_noticed\n", channel->thread_id); @@ -570,6 +652,7 @@ g_io_win32_prepare (GSource *source, if (channel->debug) g_print ("g_io_win32_prepare: thread %#x, there.\n", channel->thread_id); + UNLOCK (channel->mutex); } return ((watch->condition & buffer_condition) == watch->condition); @@ -600,6 +683,7 @@ g_io_win32_check (GSource *source) if (channel->type == G_IO_WIN32_SOCKET) { + LOCK (channel->mutex); if (channel->debug) g_print ("g_io_win32_check: thread %#x, resetting data_avail\n", channel->thread_id); @@ -607,6 +691,7 @@ g_io_win32_check (GSource *source) if (channel->debug) g_print ("g_io_win32_check: thread %#x, there.\n", channel->thread_id); + UNLOCK (channel->mutex); } return ((watch->pollfd.revents | buffer_condition) & watch->condition); @@ -638,7 +723,9 @@ g_io_win32_finalize (GSource *source) { GIOWin32Watch *watch = (GIOWin32Watch *)source; GIOWin32Channel *channel = (GIOWin32Channel *)watch->channel; + char send_buffer[] = "f"; + LOCK (channel->mutex); if (channel->debug) g_print ("g_io_win32_finalize: channel with thread %#x\n", channel->thread_id); @@ -646,7 +733,11 @@ g_io_win32_finalize (GSource *source) channel->watches = g_slist_remove (channel->watches, watch); SetEvent (channel->data_avail_noticed_event); + if (channel->type == G_IO_WIN32_SOCKET) + send(channel->reset_send, send_buffer, sizeof(send_buffer), 0); + g_io_channel_unref (watch->channel); + UNLOCK (channel->mutex); } #if defined(G_PLATFORM_WIN32) && defined(__GNUC__) @@ -667,6 +758,7 @@ g_io_win32_create_watch (GIOChannel *channel, GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel; GIOWin32Watch *watch; GSource *source; + char send_buffer[] = "c"; source = g_source_new (&g_io_watch_funcs, sizeof (GIOWin32Watch)); watch = (GIOWin32Watch *)source; @@ -685,14 +777,18 @@ g_io_win32_create_watch (GIOChannel *channel, if (win32_channel->debug) g_print ("g_io_win32_create_watch: fd:%d condition:%#x handle:%#x\n", win32_channel->fd, condition, watch->pollfd.fd); - + + LOCK (win32_channel->mutex); win32_channel->watches = g_slist_append (win32_channel->watches, watch); if (win32_channel->thread_id == 0) create_thread (win32_channel, condition, thread); + else + send(win32_channel->reset_send, send_buffer, sizeof(send_buffer), 0); g_source_add_poll (source, &watch->pollfd); - + UNLOCK (win32_channel->mutex); + return source; } @@ -709,7 +805,7 @@ g_io_win32_msg_read (GIOChannel *channel, if (count < sizeof (MSG)) { g_set_error(err, G_IO_CHANNEL_ERROR, G_IO_CHANNEL_ERROR_INVAL, - _("Incorrect message size")); /* Informative enough error message? */ + "Incorrect message size"); /* Informative enough error message? */ return G_IO_STATUS_ERROR; } @@ -738,7 +834,7 @@ g_io_win32_msg_write (GIOChannel *channel, if (count != sizeof (MSG)) { g_set_error(err, G_IO_CHANNEL_ERROR, G_IO_CHANNEL_ERROR_INVAL, - _("Incorrect message size")); /* Informative enough error message? */ + "Incorrect message size"); /* Informative enough error message? */ return G_IO_STATUS_ERROR; } @@ -776,6 +872,10 @@ g_io_win32_free (GIOChannel *channel) win32_channel->thread_id, win32_channel->fd); + if (win32_channel->reset_send) + closesocket(win32_channel->reset_send); + if (win32_channel->reset_recv) + closesocket(win32_channel->reset_recv); if (win32_channel->data_avail_event) CloseHandle (win32_channel->data_avail_event); if (win32_channel->space_avail_event) @@ -999,7 +1099,9 @@ g_io_win32_sock_read (GIOChannel *channel, { GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel; gint result; - GIOChannelError error; + GIOChannelError error = G_IO_STATUS_NORMAL; + GIOStatus internal_status = G_IO_STATUS_NORMAL; + char send_buffer[] = "sr"; if (win32_channel->debug) g_print ("g_io_win32_sock_read: sockfd:%d count:%d\n", @@ -1031,16 +1133,27 @@ repeat: error = G_IO_CHANNEL_ERROR_FAILED; break; } - g_set_error(err, G_IO_CHANNEL_ERROR, error, _("Socket error")); - return G_IO_STATUS_ERROR; + g_set_error(err, G_IO_CHANNEL_ERROR, error, "Socket read error"); + internal_status = G_IO_STATUS_ERROR; /* FIXME get all errors, better error messages */ } else { *bytes_read = result; - - return (result > 0) ? G_IO_STATUS_NORMAL : G_IO_STATUS_EOF; + if (result == 0) + internal_status = G_IO_STATUS_EOF; } + + if ((internal_status == G_IO_STATUS_EOF) || + (internal_status == G_IO_STATUS_ERROR)) + { + LOCK (win32_channel->mutex); + SetEvent(win32_channel->data_avail_noticed_event); + win32_channel->needs_close = 1; + send(win32_channel->reset_send, send_buffer, sizeof(send_buffer), 0); + UNLOCK (win32_channel->mutex); + } + return internal_status; } static GIOStatus @@ -1052,7 +1165,8 @@ g_io_win32_sock_write (GIOChannel *channel, { GIOWin32Channel *win32_channel = (GIOWin32Channel *)channel; gint result; - GIOChannelError error; + GIOChannelError error = G_IO_STATUS_NORMAL; + char send_buffer[] = "sw"; if (win32_channel->debug) g_print ("g_io_win32_sock_write: sockfd:%d count:%d\n", @@ -1084,8 +1198,13 @@ repeat: error = G_IO_CHANNEL_ERROR_FAILED; break; } - g_set_error(err, G_IO_CHANNEL_ERROR, error, _("Socket error")); - return G_IO_STATUS_ERROR; + g_set_error(err, G_IO_CHANNEL_ERROR, error, "Socket write error"); + LOCK (win32_channel->mutex); + SetEvent(win32_channel->data_avail_noticed_event); + win32_channel->needs_close = 1; + send(win32_channel->reset_send, send_buffer, sizeof(send_buffer), 0); + UNLOCK (win32_channel->mutex); + return G_IO_STATUS_ERROR; /* FIXME get all errors, better error messages */ } else @@ -1471,6 +1590,7 @@ g_io_channel_win32_new_socket (int socket) g_io_channel_init (channel); g_io_channel_win32_init (win32_channel); + init_reset_sockets(channel); if (win32_channel->debug) g_print ("g_io_channel_win32_new_socket: sockfd:%d\n", socket); channel->funcs = &win32_channel_sock_funcs; |