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+++ dyld/dyld-940/common/Diagnostics.cpp
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+/*
+ * Copyright (c) 2017 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include <iostream>
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <uuid/uuid.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <_simple.h>
+#include <unistd.h>
+#include <sys/uio.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/resource.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <dirent.h>
+#include <mach/mach.h>
+#include <mach/machine.h>
+#include <mach/mach_time.h>
+#include <mach-o/loader.h>
+#include <mach-o/nlist.h>
+#include <mach-o/fat.h>
+#include <pthread.h>
+#include <libc_private.h>
+
+#include "Diagnostics.h"
+
+#if BUILDING_CACHE_BUILDER
+ #include <dispatch/dispatch.h>
+ dispatch_queue_t sWarningQueue = dispatch_queue_create("com.apple.dyld.cache-builder.warnings", NULL);
+#endif
+
+Diagnostics::Diagnostics(bool verbose)
+#if BUILDING_CACHE_BUILDER
+ : _prefix(""), _verbose(verbose)
+#endif
+{
+}
+
+#if BUILDING_CACHE_BUILDER
+Diagnostics::Diagnostics(const std::string& prefix, bool verbose)
+ : _prefix(prefix),_verbose(verbose)
+{
+}
+#endif
+
+Diagnostics::~Diagnostics()
+{
+ clearError();
+}
+
+void Diagnostics::error(const char* format, ...)
+{
+ va_list list;
+ va_start(list, format);
+ error(format, list);
+ va_end(list);
+}
+
+void Diagnostics::error(const char* format, va_list list)
+{
+ if ( _buffer == nullptr )
+ _buffer = _simple_salloc();
+ _simple_vsprintf(_buffer, format, list);
+
+#if BUILDING_CACHE_BUILDER
+ if ( !_verbose )
+ return;
+
+ if (_prefix.empty()) {
+ fprintf(stderr, "%s\n", _simple_string(_buffer));
+ } else {
+ fprintf(stderr, "[%s] %s\n", _prefix.c_str(), _simple_string(_buffer));
+ }
+#endif
+}
+
+ void Diagnostics::appendError(const char* format, ...)
+ {
+ if ( _buffer != nullptr )
+ _simple_sresize(_buffer);
+ va_list list;
+ va_start(list, format);
+ error(format, list);
+ va_end(list);
+ }
+
+bool Diagnostics::hasError() const
+{
+ return _buffer != nullptr;
+}
+
+bool Diagnostics::noError() const
+{
+ return _buffer == nullptr;
+}
+
+void Diagnostics::clearError()
+{
+ if ( _buffer )
+ _simple_sfree(_buffer);
+ _buffer = nullptr;
+}
+
+void Diagnostics::assertNoError() const
+{
+ if ( _buffer != nullptr )
+ abort_report_np("%s", _simple_string(_buffer));
+}
+
+bool Diagnostics::errorMessageContains(const char* subString) const
+{
+ if ( _buffer == nullptr )
+ return false;
+ return (strstr(_simple_string(_buffer), subString) != nullptr);
+}
+
+
+#if !BUILDING_CACHE_BUILDER
+const char* Diagnostics::errorMessage() const
+{
+ return _buffer ? _simple_string(_buffer) : "";
+}
+
+#else
+void Diagnostics::warning(const char* format, ...)
+{
+ _SIMPLE_STRING tmp = _simple_salloc();
+ va_list list;
+ va_start(list, format);
+ _simple_vsprintf(tmp, format, list);
+ va_end(list);
+#if BUILDING_CACHE_BUILDER
+ dispatch_sync(sWarningQueue, ^{
+ _warnings.insert(_simple_string(tmp));
+ });
+#else
+ _warnings.insert(_simple_string(tmp));
+#endif
+ _simple_sfree(tmp);
+}
+
+void Diagnostics::verbose(const char* format, ...)
+{
+ if ( !_verbose )
+ return;
+
+ char* output_string;
+ va_list list;
+ va_start(list, format);
+ vasprintf(&output_string, format, list);
+ va_end(list);
+
+ if (_prefix.empty()) {
+ fprintf(stderr, "%s", output_string);
+ } else {
+ fprintf(stderr, "[%s] %s", _prefix.c_str(), output_string);
+ }
+ free(output_string);
+}
+
+const std::string Diagnostics::prefix() const
+{
+ return _prefix;
+}
+
+void Diagnostics::copy(const Diagnostics& other)
+{
+ if ( other.hasError() )
+ error("%s", other.errorMessage().c_str());
+ for (const std::string& warn : other.warnings())
+ warning("%s", warn.c_str());
+}
+
+std::string Diagnostics::errorMessage() const
+{
+ return errorMessageCStr();
+}
+
+const char* Diagnostics::errorMessageCStr() const
+{
+ if ( _buffer != nullptr )
+ return _simple_string(_buffer);
+ else
+ return "";
+}
+
+const std::set<std::string> Diagnostics::warnings() const
+{
+#if BUILDING_CACHE_BUILDER
+ __block std::set<std::string> retval;
+ dispatch_sync(sWarningQueue, ^{
+ retval = _warnings;
+ });
+ return retval;
+#else
+ return _warnings;
+#endif
+}
+
+void Diagnostics::clearWarnings()
+{
+#if BUILDING_CACHE_BUILDER
+ dispatch_sync(sWarningQueue, ^{
+ _warnings.clear();
+ });
+#else
+ _warnings.clear();
+#endif
+}
+
+#if BUILDING_CACHE_BUILDER
+void TimeRecorder::pushTimedSection() {
+ openTimings.push_back(mach_absolute_time());
+}
+
+void TimeRecorder::recordTime(const char* format, ...) {
+ uint64_t t = mach_absolute_time();
+ uint64_t previousTime = openTimings.back();
+ openTimings.pop_back();
+
+ char* output_string = nullptr;
+ va_list list;
+ va_start(list, format);
+ vasprintf(&output_string, format, list);
+ va_end(list);
+
+ if (output_string != nullptr) {
+ timings.push_back(TimingEntry {
+ .time = t - previousTime,
+ .logMessage = std::string(output_string),
+ .depth = (int)openTimings.size()
+ });
+ }
+
+ openTimings.push_back(mach_absolute_time());
+}
+
+void TimeRecorder::popTimedSection() {
+ openTimings.pop_back();
+}
+
+static inline uint32_t absolutetime_to_milliseconds(uint64_t abstime)
+{
+ return (uint32_t)(abstime/1000/1000);
+}
+
+void TimeRecorder::logTimings() {
+ for (const TimingEntry& entry : timings) {
+ for (int i = 0 ; i < entry.depth ; i++) {
+ std::cerr << " ";
+ }
+ std::cerr << "time to " << entry.logMessage << " " << absolutetime_to_milliseconds(entry.time) << "ms" << std::endl;
+ }
+
+ timings.clear();
+}
+#endif
+
+#endif
+