mirror of
https://github.com/dart-lang/sdk
synced 2024-09-05 16:41:07 +00:00
b3093ecee6
On Windows, some Windows 10 builds support only ANSI output, but not input, so these need to be separated. I'm also improving the detection on Mac and Linux to avoid hardcoding the result. Instead, supportsAnsiEscapes will be true if isatty() and the TERM environment variable contains the string 'xterm'. related #28614 R=lrn@google.com Review-Url: https://codereview.chromium.org/2753233002 .
121 lines
2.7 KiB
C++
121 lines
2.7 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "platform/globals.h"
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#if defined(HOST_OS_LINUX)
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#include "bin/platform.h"
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#include <signal.h> // NOLINT
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#include <string.h> // NOLINT
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#include <unistd.h> // NOLINT
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#include "bin/fdutils.h"
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#include "bin/file.h"
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namespace dart {
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namespace bin {
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const char* Platform::executable_name_ = NULL;
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char* Platform::resolved_executable_name_ = NULL;
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int Platform::script_index_ = 1;
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char** Platform::argv_ = NULL;
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static void segv_handler(int signal, siginfo_t* siginfo, void* context) {
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Dart_DumpNativeStackTrace(context);
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abort();
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}
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bool Platform::Initialize() {
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// Turn off the signal handler for SIGPIPE as it causes the process
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// to terminate on writing to a closed pipe. Without the signal
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// handler error EPIPE is set instead.
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struct sigaction act;
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bzero(&act, sizeof(act));
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act.sa_handler = SIG_IGN;
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if (sigaction(SIGPIPE, &act, 0) != 0) {
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perror("Setting signal handler failed");
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return false;
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}
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act.sa_flags = SA_SIGINFO;
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act.sa_sigaction = &segv_handler;
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if (sigemptyset(&act.sa_mask) != 0) {
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perror("sigemptyset() failed.");
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return false;
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}
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if (sigaddset(&act.sa_mask, SIGPROF) != 0) {
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perror("sigaddset() failed");
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return false;
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}
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if (sigaction(SIGSEGV, &act, NULL) != 0) {
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perror("sigaction() failed.");
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return false;
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}
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if (sigaction(SIGTRAP, &act, NULL) != 0) {
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perror("sigaction() failed.");
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return false;
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}
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return true;
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}
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int Platform::NumberOfProcessors() {
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return sysconf(_SC_NPROCESSORS_ONLN);
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}
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const char* Platform::OperatingSystem() {
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return "linux";
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}
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const char* Platform::LibraryPrefix() {
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return "lib";
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}
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const char* Platform::LibraryExtension() {
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return "so";
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}
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bool Platform::LocalHostname(char* buffer, intptr_t buffer_length) {
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return gethostname(buffer, buffer_length) == 0;
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}
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char** Platform::Environment(intptr_t* count) {
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// Using environ directly is only safe as long as we do not
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// provide access to modifying environment variables.
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intptr_t i = 0;
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char** tmp = environ;
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while (*(tmp++) != NULL) {
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i++;
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}
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*count = i;
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char** result;
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result = reinterpret_cast<char**>(Dart_ScopeAllocate(i * sizeof(*result)));
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for (intptr_t current = 0; current < i; current++) {
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result[current] = environ[current];
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}
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return result;
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}
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const char* Platform::ResolveExecutablePath() {
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return File::LinkTarget("/proc/self/exe");
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}
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void Platform::Exit(int exit_code) {
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exit(exit_code);
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}
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} // namespace bin
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} // namespace dart
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#endif // defined(HOST_OS_LINUX)
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