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95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
/**********************************************************************
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* File: errcode.cpp (Formerly error.c)
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* Description: Generic error handler function
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* Author: Ray Smith
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* Created: Tue May 1 16:28:39 BST 1990
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*
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* (C) Copyright 1989, Hewlett-Packard Ltd.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*
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**********************************************************************/
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#include <signal.h>
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#ifdef __linux__
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#include <sys/syscall.h> // For SYS_gettid.
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#include <unistd.h> // For syscall itself.
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#endif
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#include "allheaders.h"
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#include "errcode.h"
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#include "tprintf.h"
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// Size of thread-id array of pixes to keep in case of crash.
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const int kMaxNumThreadPixes = 32768;
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Pix* global_crash_pixes[kMaxNumThreadPixes];
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void SavePixForCrash(int resolution, Pix* pix) {
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#ifdef __linux__
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#ifndef ANDROID
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int thread_id = syscall(SYS_gettid) % kMaxNumThreadPixes;
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#else
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int thread_id = gettid() % kMaxNumThreadPixes;
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#endif
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pixDestroy(&global_crash_pixes[thread_id]);
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if (pix != nullptr) {
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Pix* clone = pixClone(pix);
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pixSetXRes(clone, resolution);
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pixSetYRes(clone, resolution);
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global_crash_pixes[thread_id] = clone;
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}
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#endif
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}
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// CALL ONLY from a signal handler! Writes a crash image to stderr.
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void signal_exit(int signal_code) {
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tprintf("Received signal %d!\n", signal_code);
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#ifdef __linux__
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#ifndef ANDROID
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int thread_id = syscall(SYS_gettid) % kMaxNumThreadPixes;
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#else
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int thread_id = gettid() % kMaxNumThreadPixes;
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#endif
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if (global_crash_pixes[thread_id] != nullptr) {
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fprintf(stderr, "Crash caused by image with resolution %d\n",
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pixGetYRes(global_crash_pixes[thread_id]));
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fprintf(stderr, "<Cut here>\n");
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pixWriteStreamPng(stderr, global_crash_pixes[thread_id], 0.0);
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fprintf(stderr, "\n<End cut>\n");
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}
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// Raise an uncaught signal, so as to get a useful stack trace.
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raise(SIGILL);
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#else
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abort();
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#endif
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}
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void err_exit() {
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ASSERT_HOST("Fatal error encountered!" == nullptr);
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}
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void set_global_loc_code(int loc_code) {
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// global_loc_code = loc_code;
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}
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void set_global_subloc_code(int loc_code) {
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// global_subloc_code = loc_code;
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}
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void set_global_subsubloc_code(int loc_code) {
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// global_subsubloc_code = loc_code;
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}
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