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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 // |
| 5 // This is a small program that tries to connect to the X server. It |
| 6 // continually retries until it connects or 30 seconds pass. If it fails |
| 7 // to connect to the X server or fails to find needed functiona, it returns |
| 8 // an error code of -1. |
| 9 // |
| 10 // This is to help verify that a useful X server is available before we start |
| 11 // start running tests on the build bots. |
| 12 |
| 13 #include <errno.h> |
| 14 #include <stdio.h> |
| 15 #include <string.h> |
| 16 #include <time.h> |
| 17 #include <X11/Xlib.h> |
| 18 |
| 19 #if defined(USE_AURA) |
| 20 #include <X11/extensions/XInput2.h> |
| 21 #endif |
| 22 |
| 23 void Sleep(int duration_ms) { |
| 24 struct timespec sleep_time, remaining; |
| 25 |
| 26 // Contains the portion of duration_ms >= 1 sec. |
| 27 sleep_time.tv_sec = duration_ms / 1000; |
| 28 duration_ms -= sleep_time.tv_sec * 1000; |
| 29 |
| 30 // Contains the portion of duration_ms < 1 sec. |
| 31 sleep_time.tv_nsec = duration_ms * 1000 * 1000; // nanoseconds. |
| 32 |
| 33 while (nanosleep(&sleep_time, &remaining) == -1 && errno == EINTR) |
| 34 sleep_time = remaining; |
| 35 } |
| 36 |
| 37 class XScopedDisplay { |
| 38 public: |
| 39 XScopedDisplay() : display_(NULL) {} |
| 40 ~XScopedDisplay() { |
| 41 if (display_) XCloseDisplay(display_); |
| 42 } |
| 43 |
| 44 void set(Display* display) { display_ = display; } |
| 45 Display* display() { return display_; } |
| 46 |
| 47 private: |
| 48 Display* display_; |
| 49 }; |
| 50 |
| 51 int main(int argc, char* argv[]) { |
| 52 XScopedDisplay scoped_display; |
| 53 if (argv[1] && strcmp(argv[1], "--noserver") == 0) { |
| 54 scoped_display.set(XOpenDisplay(NULL)); |
| 55 if (scoped_display.display()) { |
| 56 fprintf(stderr, "Found unexpected connectable display %s\n", |
| 57 XDisplayName(NULL)); |
| 58 } |
| 59 // Return success when we got an unexpected display so that the code |
| 60 // without the --noserver is the same, but slow, rather than inverted. |
| 61 return !scoped_display.display(); |
| 62 } |
| 63 |
| 64 int kNumTries = 78; // 78*77/2 * 10 = 30s of waiting |
| 65 int tries; |
| 66 for (tries = 0; tries < kNumTries; ++tries) { |
| 67 scoped_display.set(XOpenDisplay(NULL)); |
| 68 if (scoped_display.display()) |
| 69 break; |
| 70 Sleep(10 * tries); |
| 71 } |
| 72 |
| 73 if (!scoped_display.display()) { |
| 74 fprintf(stderr, "Failed to connect to %s\n", XDisplayName(NULL)); |
| 75 return -1; |
| 76 } |
| 77 |
| 78 fprintf(stderr, "Connected after %d retries\n", tries); |
| 79 |
| 80 #if defined(USE_AURA) |
| 81 // Check for XInput2 |
| 82 int opcode, event, err; |
| 83 if (!XQueryExtension(scoped_display.display(), "XInputExtension", &opcode, |
| 84 &event, &err)) { |
| 85 fprintf(stderr, |
| 86 "Failed to get XInputExtension on %s.\n", XDisplayName(NULL)); |
| 87 return -2; |
| 88 } |
| 89 |
| 90 int major = 2, minor = 0; |
| 91 if (XIQueryVersion(scoped_display.display(), &major, &minor) == BadRequest) { |
| 92 fprintf(stderr, |
| 93 "Server does not have XInput2 on %s.\n", XDisplayName(NULL)); |
| 94 return -3; |
| 95 } |
| 96 |
| 97 // Ask for the list of devices. This can cause some Xvfb to crash. |
| 98 int count = 0; |
| 99 XIDeviceInfo* devices = |
| 100 XIQueryDevice(scoped_display.display(), XIAllDevices, &count); |
| 101 if (devices) |
| 102 XIFreeDeviceInfo(devices); |
| 103 |
| 104 fprintf(stderr, |
| 105 "XInput2 verified initially sane on %s.\n", XDisplayName(NULL)); |
| 106 #endif |
| 107 return 0; |
| 108 } |
| 109 |
| 110 #if defined(LEAK_SANITIZER) |
| 111 // XOpenDisplay leaks memory if it takes more than one try to connect. This |
| 112 // causes LSan bots to fail. We don't care about memory leaks in xdisplaycheck |
| 113 // anyway, so just disable LSan completely. |
| 114 // This function isn't referenced from the executable itself. Make sure it isn't |
| 115 // stripped by the linker. |
| 116 __attribute__((used)) |
| 117 __attribute__((visibility("default"))) |
| 118 extern "C" int __lsan_is_turned_off() { return 1; } |
| 119 #endif |
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