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b9c1b51e45
*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
147 lines
4.0 KiB
C++
147 lines
4.0 KiB
C++
//===-- ConnectionSharedMemory.cpp ------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef __ANDROID_NDK__
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#include "lldb/Core/ConnectionSharedMemory.h"
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// C Includes
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#ifdef _WIN32
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#include "lldb/Host/windows/windows.h"
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#else
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#endif
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// C++ Includes
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#include <cerrno>
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#include <cstdlib>
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// Other libraries and framework includes
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#include "llvm/Support/ConvertUTF.h"
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#include "llvm/Support/MathExtras.h"
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// Project includes
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#include "lldb/Core/Communication.h"
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#include "lldb/Core/Log.h"
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#include "lldb/Host/PosixApi.h"
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using namespace lldb;
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using namespace lldb_private;
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ConnectionSharedMemory::ConnectionSharedMemory()
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: Connection(), m_name(), m_fd(-1), m_mmap() {}
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ConnectionSharedMemory::~ConnectionSharedMemory() { Disconnect(nullptr); }
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bool ConnectionSharedMemory::IsConnected() const { return m_fd >= 0; }
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ConnectionStatus ConnectionSharedMemory::Connect(const char *s,
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Error *error_ptr) {
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// if (s && s[0])
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// {
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// if (strstr(s, "shm-create://"))
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// {
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// }
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// else if (strstr(s, "shm-connect://"))
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// {
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// }
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// if (error_ptr)
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// error_ptr->SetErrorStringWithFormat ("unsupported connection
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// URL: '%s'", s);
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// return eConnectionStatusError;
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// }
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if (error_ptr)
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error_ptr->SetErrorString("invalid connect arguments");
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return eConnectionStatusError;
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}
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ConnectionStatus ConnectionSharedMemory::Disconnect(Error *error_ptr) {
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m_mmap.Clear();
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if (!m_name.empty()) {
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#ifdef _WIN32
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close(m_fd);
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m_fd = -1;
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#else
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shm_unlink(m_name.c_str());
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#endif
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m_name.clear();
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}
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return eConnectionStatusSuccess;
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}
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size_t ConnectionSharedMemory::Read(void *dst, size_t dst_len,
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uint32_t timeout_usec,
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ConnectionStatus &status,
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Error *error_ptr) {
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status = eConnectionStatusSuccess;
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return 0;
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}
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size_t ConnectionSharedMemory::Write(const void *src, size_t src_len,
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ConnectionStatus &status,
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Error *error_ptr) {
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status = eConnectionStatusSuccess;
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return 0;
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}
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std::string ConnectionSharedMemory::GetURI() {
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// TODO: fix when Connect is fixed?
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return "";
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}
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ConnectionStatus ConnectionSharedMemory::BytesAvailable(uint32_t timeout_usec,
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Error *error_ptr) {
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return eConnectionStatusLostConnection;
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}
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ConnectionStatus ConnectionSharedMemory::Open(bool create, const char *name,
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size_t size, Error *error_ptr) {
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if (m_fd != -1) {
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if (error_ptr)
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error_ptr->SetErrorString("already open");
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return eConnectionStatusError;
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}
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m_name.assign(name);
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#ifdef _WIN32
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HANDLE handle = INVALID_HANDLE_VALUE;
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std::wstring wname;
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if (llvm::ConvertUTF8toWide(name, wname)) {
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if (create) {
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handle = CreateFileMappingW(INVALID_HANDLE_VALUE, nullptr, PAGE_READWRITE,
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llvm::Hi_32(size), llvm::Lo_32(size),
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wname.c_str());
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} else
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handle = OpenFileMappingW(FILE_MAP_ALL_ACCESS, FALSE, wname.c_str());
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}
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m_fd = _open_osfhandle((intptr_t)handle, 0);
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#else
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int oflag = O_RDWR;
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if (create)
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oflag |= O_CREAT;
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m_fd = ::shm_open(m_name.c_str(), oflag, S_IRUSR | S_IWUSR);
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if (create)
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::ftruncate(m_fd, size);
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#endif
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if (m_mmap.MemoryMapFromFileDescriptor(m_fd, 0, size, true, false) == size)
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return eConnectionStatusSuccess;
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Disconnect(nullptr);
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return eConnectionStatusError;
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}
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#endif // __ANDROID_NDK__
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