The Tor Browser / file comparison
comparison: widget/gtk/nsAppShell.cpp
widget/gtk/nsAppShell.cpp
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
equal
deleted
inserted
replaced
| -1:000000000000 | 0:217ee13a6107 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* vim:expandtab:shiftwidth=4:tabstop=4: | |
| 3 */ | |
| 4 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 5 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 7 | |
| 8 #include <sys/types.h> | |
| 9 #include <unistd.h> | |
| 10 #include <fcntl.h> | |
| 11 #include <errno.h> | |
| 12 #include <gdk/gdk.h> | |
| 13 #include "nsAppShell.h" | |
| 14 #include "nsWindow.h" | |
| 15 #include "prlog.h" | |
| 16 #include "prenv.h" | |
| 17 #include "mozilla/HangMonitor.h" | |
| 18 #include "mozilla/unused.h" | |
| 19 #include "GeckoProfiler.h" | |
| 20 | |
| 21 using mozilla::unused; | |
| 22 | |
| 23 #define NOTIFY_TOKEN 0xFA | |
| 24 | |
| 25 #ifdef PR_LOGGING | |
| 26 PRLogModuleInfo *gWidgetLog = nullptr; | |
| 27 PRLogModuleInfo *gWidgetFocusLog = nullptr; | |
| 28 PRLogModuleInfo *gWidgetDragLog = nullptr; | |
| 29 PRLogModuleInfo *gWidgetDrawLog = nullptr; | |
| 30 #endif | |
| 31 | |
| 32 static GPollFunc sPollFunc; | |
| 33 | |
| 34 // Wrapper function to disable hang monitoring while waiting in poll(). | |
| 35 static gint | |
| 36 PollWrapper(GPollFD *ufds, guint nfsd, gint timeout_) | |
| 37 { | |
| 38 mozilla::HangMonitor::Suspend(); | |
| 39 profiler_sleep_start(); | |
| 40 gint result = (*sPollFunc)(ufds, nfsd, timeout_); | |
| 41 profiler_sleep_end(); | |
| 42 mozilla::HangMonitor::NotifyActivity(); | |
| 43 return result; | |
| 44 } | |
| 45 | |
| 46 /*static*/ gboolean | |
| 47 nsAppShell::EventProcessorCallback(GIOChannel *source, | |
| 48 GIOCondition condition, | |
| 49 gpointer data) | |
| 50 { | |
| 51 nsAppShell *self = static_cast<nsAppShell *>(data); | |
| 52 | |
| 53 unsigned char c; | |
| 54 unused << read(self->mPipeFDs[0], &c, 1); | |
| 55 NS_ASSERTION(c == (unsigned char) NOTIFY_TOKEN, "wrong token"); | |
| 56 | |
| 57 self->NativeEventCallback(); | |
| 58 return TRUE; | |
| 59 } | |
| 60 | |
| 61 nsAppShell::~nsAppShell() | |
| 62 { | |
| 63 if (mTag) | |
| 64 g_source_remove(mTag); | |
| 65 if (mPipeFDs[0]) | |
| 66 close(mPipeFDs[0]); | |
| 67 if (mPipeFDs[1]) | |
| 68 close(mPipeFDs[1]); | |
| 69 } | |
| 70 | |
| 71 nsresult | |
| 72 nsAppShell::Init() | |
| 73 { | |
| 74 #ifdef PR_LOGGING | |
| 75 if (!gWidgetLog) | |
| 76 gWidgetLog = PR_NewLogModule("Widget"); | |
| 77 if (!gWidgetFocusLog) | |
| 78 gWidgetFocusLog = PR_NewLogModule("WidgetFocus"); | |
| 79 if (!gWidgetDragLog) | |
| 80 gWidgetDragLog = PR_NewLogModule("WidgetDrag"); | |
| 81 if (!gWidgetDrawLog) | |
| 82 gWidgetDrawLog = PR_NewLogModule("WidgetDraw"); | |
| 83 #endif | |
| 84 | |
| 85 if (!sPollFunc) { | |
| 86 sPollFunc = g_main_context_get_poll_func(nullptr); | |
| 87 g_main_context_set_poll_func(nullptr, &PollWrapper); | |
| 88 } | |
| 89 | |
| 90 if (PR_GetEnv("MOZ_DEBUG_PAINTS")) | |
| 91 gdk_window_set_debug_updates(TRUE); | |
| 92 | |
| 93 int err = pipe(mPipeFDs); | |
| 94 if (err) | |
| 95 return NS_ERROR_OUT_OF_MEMORY; | |
| 96 | |
| 97 GIOChannel *ioc; | |
| 98 GSource *source; | |
| 99 | |
| 100 // make the pipe nonblocking | |
| 101 | |
| 102 int flags = fcntl(mPipeFDs[0], F_GETFL, 0); | |
| 103 if (flags == -1) | |
| 104 goto failed; | |
| 105 err = fcntl(mPipeFDs[0], F_SETFL, flags | O_NONBLOCK); | |
| 106 if (err == -1) | |
| 107 goto failed; | |
| 108 flags = fcntl(mPipeFDs[1], F_GETFL, 0); | |
| 109 if (flags == -1) | |
| 110 goto failed; | |
| 111 err = fcntl(mPipeFDs[1], F_SETFL, flags | O_NONBLOCK); | |
| 112 if (err == -1) | |
| 113 goto failed; | |
| 114 | |
| 115 ioc = g_io_channel_unix_new(mPipeFDs[0]); | |
| 116 source = g_io_create_watch(ioc, G_IO_IN); | |
| 117 g_io_channel_unref(ioc); | |
| 118 g_source_set_callback(source, (GSourceFunc)EventProcessorCallback, this, nullptr); | |
| 119 g_source_set_can_recurse(source, TRUE); | |
| 120 mTag = g_source_attach(source, nullptr); | |
| 121 g_source_unref(source); | |
| 122 | |
| 123 return nsBaseAppShell::Init(); | |
| 124 failed: | |
| 125 close(mPipeFDs[0]); | |
| 126 close(mPipeFDs[1]); | |
| 127 mPipeFDs[0] = mPipeFDs[1] = 0; | |
| 128 return NS_ERROR_FAILURE; | |
| 129 } | |
| 130 | |
| 131 void | |
| 132 nsAppShell::ScheduleNativeEventCallback() | |
| 133 { | |
| 134 unsigned char buf[] = { NOTIFY_TOKEN }; | |
| 135 unused << write(mPipeFDs[1], buf, 1); | |
| 136 } | |
| 137 | |
| 138 bool | |
| 139 nsAppShell::ProcessNextNativeEvent(bool mayWait) | |
| 140 { | |
| 141 return g_main_context_iteration(nullptr, mayWait); | |
| 142 } |
