116 lines
3.4 KiB
C++
116 lines
3.4 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// This is a small program that tries to connect to the X server. It
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// continually retries until it connects or 30 seconds pass. If it fails
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// to connect to the X server or fails to find needed functiona, it returns
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// an error code of -1.
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//
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// This is to help verify that a useful X server is available before we start
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// start running tests on the build bots.
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include <X11/Xlib.h>
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#if defined(USE_AURA)
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#include <X11/extensions/XInput2.h>
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#endif
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void Sleep(int duration_ms) {
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struct timespec sleep_time, remaining;
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// Contains the portion of duration_ms >= 1 sec.
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sleep_time.tv_sec = duration_ms / 1000;
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duration_ms -= sleep_time.tv_sec * 1000;
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// Contains the portion of duration_ms < 1 sec.
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sleep_time.tv_nsec = duration_ms * 1000 * 1000; // nanoseconds.
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while (nanosleep(&sleep_time, &remaining) == -1 && errno == EINTR)
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sleep_time = remaining;
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}
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class XScopedDisplay {
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public:
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XScopedDisplay() : display_(NULL) {}
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~XScopedDisplay() {
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if (display_) XCloseDisplay(display_);
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}
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void set(Display* display) { display_ = display; }
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Display* display() { return display_; }
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private:
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Display* display_;
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};
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int main(int argc, char* argv[]) {
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XScopedDisplay scoped_display;
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if (argv[1] && strcmp(argv[1], "--noserver") == 0) {
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scoped_display.set(XOpenDisplay(NULL));
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if (scoped_display.display()) {
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fprintf(stderr, "Found unexpected connectable display %s\n",
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XDisplayName(NULL));
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}
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// Return success when we got an unexpected display so that the code
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// without the --noserver is the same, but slow, rather than inverted.
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return !scoped_display.display();
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}
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int kNumTries = 78; // 78*77/2 * 10 = 30s of waiting
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int tries;
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for (tries = 0; tries < kNumTries; ++tries) {
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scoped_display.set(XOpenDisplay(NULL));
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if (scoped_display.display())
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break;
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Sleep(10 * tries);
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}
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if (!scoped_display.display()) {
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fprintf(stderr, "Failed to connect to %s\n", XDisplayName(NULL));
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return -1;
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}
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fprintf(stderr, "Connected after %d retries\n", tries);
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#if defined(USE_AURA)
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// Check for XInput2
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int opcode, event, err;
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if (!XQueryExtension(scoped_display.display(), "XInputExtension", &opcode,
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&event, &err)) {
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fprintf(stderr,
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"Failed to get XInputExtension on %s.\n", XDisplayName(NULL));
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return -1;
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}
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int major = 2, minor = 0;
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if (XIQueryVersion(scoped_display.display(), &major, &minor) == BadRequest) {
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fprintf(stderr,
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"Server does not have XInput2 on %s.\n", XDisplayName(NULL));
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return -1;
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}
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// Ask for the list of devices. This can cause some Xvfb to crash.
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int count = 0;
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XIDeviceInfo* devices =
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XIQueryDevice(scoped_display.display(), XIAllDevices, &count);
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if (devices)
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XIFreeDeviceInfo(devices);
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fprintf(stderr,
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"XInput2 verified initially sane on %s.\n", XDisplayName(NULL));
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#endif
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return 0;
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}
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#if defined(LEAK_SANITIZER)
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// XOpenDisplay leaks memory if it takes more than one try to connect. This
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// causes LSan bots to fail. We don't care about memory leaks in xdisplaycheck
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// anyway, so just disable LSan completely.
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extern "C" int __lsan_is_turned_off() { return 1; }
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#endif
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