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authorRemko Tronçon <git@el-tramo.be>2012-08-17 21:07:13 (GMT)
committerRemko Tronçon <git@el-tramo.be>2012-08-17 21:07:13 (GMT)
commit4397df6b409ca84f63838fa635fc2abe8af80b71 (patch)
tree0806d51a1aaa6a1f9ac00df318be72fbee19ec1d /3rdParty/Breakpad/src/client/minidump_file_writer.cc
parentead6c91f24d77de3319e77ae1354387407065ef1 (diff)
downloadswift-contrib-4397df6b409ca84f63838fa635fc2abe8af80b71.zip
swift-contrib-4397df6b409ca84f63838fa635fc2abe8af80b71.tar.bz2
Added Breakpad support for Windows.
Diffstat (limited to '3rdParty/Breakpad/src/client/minidump_file_writer.cc')
-rw-r--r--3rdParty/Breakpad/src/client/minidump_file_writer.cc284
1 files changed, 284 insertions, 0 deletions
diff --git a/3rdParty/Breakpad/src/client/minidump_file_writer.cc b/3rdParty/Breakpad/src/client/minidump_file_writer.cc
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+// Copyright (c) 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// minidump_file_writer.cc: Minidump file writer implementation.
+//
+// See minidump_file_writer.h for documentation.
+
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "client/minidump_file_writer-inl.h"
+#include "common/linux/linux_libc_support.h"
+#include "common/string_conversion.h"
+#if __linux__
+#include "third_party/lss/linux_syscall_support.h"
+#endif
+
+namespace google_breakpad {
+
+const MDRVA MinidumpFileWriter::kInvalidMDRVA = static_cast<MDRVA>(-1);
+
+MinidumpFileWriter::MinidumpFileWriter()
+ : file_(-1),
+ close_file_when_destroyed_(true),
+ position_(0),
+ size_(0) {
+}
+
+MinidumpFileWriter::~MinidumpFileWriter() {
+ if (close_file_when_destroyed_)
+ Close();
+}
+
+bool MinidumpFileWriter::Open(const char *path) {
+ assert(file_ == -1);
+#if __linux__
+ file_ = sys_open(path, O_WRONLY | O_CREAT | O_EXCL, 0600);
+#else
+ file_ = open(path, O_WRONLY | O_CREAT | O_EXCL, 0600);
+#endif
+
+ return file_ != -1;
+}
+
+void MinidumpFileWriter::SetFile(const int file) {
+ assert(file_ == -1);
+ file_ = file;
+ close_file_when_destroyed_ = false;
+}
+
+bool MinidumpFileWriter::Close() {
+ bool result = true;
+
+ if (file_ != -1) {
+ if (-1 == ftruncate(file_, position_)) {
+ return false;
+ }
+#if __linux__
+ result = (sys_close(file_) == 0);
+#else
+ result = (close(file_) == 0);
+#endif
+ file_ = -1;
+ }
+
+ return result;
+}
+
+bool MinidumpFileWriter::CopyStringToMDString(const wchar_t *str,
+ unsigned int length,
+ TypedMDRVA<MDString> *mdstring) {
+ bool result = true;
+ if (sizeof(wchar_t) == sizeof(u_int16_t)) {
+ // Shortcut if wchar_t is the same size as MDString's buffer
+ result = mdstring->Copy(str, mdstring->get()->length);
+ } else {
+ u_int16_t out[2];
+ int out_idx = 0;
+
+ // Copy the string character by character
+ while (length && result) {
+ UTF32ToUTF16Char(*str, out);
+ if (!out[0])
+ return false;
+
+ // Process one character at a time
+ --length;
+ ++str;
+
+ // Append the one or two UTF-16 characters. The first one will be non-
+ // zero, but the second one may be zero, depending on the conversion from
+ // UTF-32.
+ int out_count = out[1] ? 2 : 1;
+ size_t out_size = sizeof(u_int16_t) * out_count;
+ result = mdstring->CopyIndexAfterObject(out_idx, out, out_size);
+ out_idx += out_count;
+ }
+ }
+ return result;
+}
+
+bool MinidumpFileWriter::CopyStringToMDString(const char *str,
+ unsigned int length,
+ TypedMDRVA<MDString> *mdstring) {
+ bool result = true;
+ u_int16_t out[2];
+ int out_idx = 0;
+
+ // Copy the string character by character
+ while (length && result) {
+ int conversion_count = UTF8ToUTF16Char(str, length, out);
+ if (!conversion_count)
+ return false;
+
+ // Move the pointer along based on the nubmer of converted characters
+ length -= conversion_count;
+ str += conversion_count;
+
+ // Append the one or two UTF-16 characters
+ int out_count = out[1] ? 2 : 1;
+ size_t out_size = sizeof(u_int16_t) * out_count;
+ result = mdstring->CopyIndexAfterObject(out_idx, out, out_size);
+ out_idx += out_count;
+ }
+ return result;
+}
+
+template <typename CharType>
+bool MinidumpFileWriter::WriteStringCore(const CharType *str,
+ unsigned int length,
+ MDLocationDescriptor *location) {
+ assert(str);
+ assert(location);
+ // Calculate the mdstring length by either limiting to |length| as passed in
+ // or by finding the location of the NULL character.
+ unsigned int mdstring_length = 0;
+ if (!length)
+ length = INT_MAX;
+ for (; mdstring_length < length && str[mdstring_length]; ++mdstring_length)
+ ;
+
+ // Allocate the string buffer
+ TypedMDRVA<MDString> mdstring(this);
+ if (!mdstring.AllocateObjectAndArray(mdstring_length + 1, sizeof(u_int16_t)))
+ return false;
+
+ // Set length excluding the NULL and copy the string
+ mdstring.get()->length =
+ static_cast<u_int32_t>(mdstring_length * sizeof(u_int16_t));
+ bool result = CopyStringToMDString(str, mdstring_length, &mdstring);
+
+ // NULL terminate
+ if (result) {
+ u_int16_t ch = 0;
+ result = mdstring.CopyIndexAfterObject(mdstring_length, &ch, sizeof(ch));
+
+ if (result)
+ *location = mdstring.location();
+ }
+
+ return result;
+}
+
+bool MinidumpFileWriter::WriteString(const wchar_t *str, unsigned int length,
+ MDLocationDescriptor *location) {
+ return WriteStringCore(str, length, location);
+}
+
+bool MinidumpFileWriter::WriteString(const char *str, unsigned int length,
+ MDLocationDescriptor *location) {
+ return WriteStringCore(str, length, location);
+}
+
+bool MinidumpFileWriter::WriteMemory(const void *src, size_t size,
+ MDMemoryDescriptor *output) {
+ assert(src);
+ assert(output);
+ UntypedMDRVA mem(this);
+
+ if (!mem.Allocate(size))
+ return false;
+ if (!mem.Copy(src, mem.size()))
+ return false;
+
+ output->start_of_memory_range = reinterpret_cast<u_int64_t>(src);
+ output->memory = mem.location();
+
+ return true;
+}
+
+MDRVA MinidumpFileWriter::Allocate(size_t size) {
+ assert(size);
+ assert(file_ != -1);
+ size_t aligned_size = (size + 7) & ~7; // 64-bit alignment
+
+ if (position_ + aligned_size > size_) {
+ size_t growth = aligned_size;
+ size_t minimal_growth = getpagesize();
+
+ // Ensure that the file grows by at least the size of a memory page
+ if (growth < minimal_growth)
+ growth = minimal_growth;
+
+ size_t new_size = size_ + growth;
+ if (ftruncate(file_, new_size) != 0)
+ return kInvalidMDRVA;
+
+ size_ = new_size;
+ }
+
+ MDRVA current_position = position_;
+ position_ += static_cast<MDRVA>(aligned_size);
+
+ return current_position;
+}
+
+bool MinidumpFileWriter::Copy(MDRVA position, const void *src, ssize_t size) {
+ assert(src);
+ assert(size);
+ assert(file_ != -1);
+
+ // Ensure that the data will fit in the allocated space
+ if (static_cast<size_t>(size + position) > size_)
+ return false;
+
+ // Seek and write the data
+#if __linux__
+ if (sys_lseek(file_, position, SEEK_SET) == static_cast<off_t>(position)) {
+ if (sys_write(file_, src, size) == size) {
+#else
+ if (lseek(file_, position, SEEK_SET) == static_cast<off_t>(position)) {
+ if (write(file_, src, size) == size) {
+#endif
+ return true;
+ }
+ }
+
+ return false;
+}
+
+bool UntypedMDRVA::Allocate(size_t size) {
+ assert(size_ == 0);
+ size_ = size;
+ position_ = writer_->Allocate(size_);
+ return position_ != MinidumpFileWriter::kInvalidMDRVA;
+}
+
+bool UntypedMDRVA::Copy(MDRVA pos, const void *src, size_t size) {
+ assert(src);
+ assert(size);
+ assert(pos + size <= position_ + size_);
+ return writer_->Copy(pos, src, size);
+}
+
+} // namespace google_breakpad