3db7ebc87f
create its own threads with 8MB additional maximum stack size. Extra room is needed for the bookkeeping needed for this instrumentation. llvm-svn: 227421
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
//===-- ThreadLauncher.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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// lldb Includes
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#include "lldb/Core/Log.h"
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#include "lldb/Host/HostNativeThread.h"
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#include "lldb/Host/HostThread.h"
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#include "lldb/Host/ThisThread.h"
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#include "lldb/Host/ThreadLauncher.h"
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#if defined(_WIN32)
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#include "lldb/Host/windows/windows.h"
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#endif
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using namespace lldb;
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using namespace lldb_private;
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HostThread
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ThreadLauncher::LaunchThread(llvm::StringRef name, lldb::thread_func_t thread_function, lldb::thread_arg_t thread_arg, Error *error_ptr, size_t min_stack_byte_size)
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{
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Error error;
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if (error_ptr)
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error_ptr->Clear();
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// Host::ThreadCreateTrampoline will delete this pointer for us.
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HostThreadCreateInfo *info_ptr = new HostThreadCreateInfo(name.data(), thread_function, thread_arg);
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lldb::thread_t thread;
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#ifdef _WIN32
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thread =
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(lldb::thread_t)::_beginthreadex(0, (unsigned)min_stack_byte_size, HostNativeThread::ThreadCreateTrampoline, info_ptr, 0, NULL);
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if (thread == (lldb::thread_t)(-1L))
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error.SetError(::GetLastError(), eErrorTypeWin32);
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#else
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// ASAN instrumentation adds a lot of bookkeeping overhead on stack frames.
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#if __has_feature(address_sanitizer)
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const size_t eight_megabytes = 8 * 1024 * 1024;
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if (min_stack_byte_size < eight_megabytes)
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{
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min_stack_byte_size += eight_megabytes;
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}
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#endif
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pthread_attr_t *thread_attr_ptr = NULL;
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pthread_attr_t thread_attr;
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bool destroy_attr = false;
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if (min_stack_byte_size > 0)
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{
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if (::pthread_attr_init (&thread_attr) == 0)
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{
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destroy_attr = true;
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size_t default_min_stack_byte_size = 0;
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if (::pthread_attr_getstacksize(&thread_attr, &default_min_stack_byte_size) == 0)
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{
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if (default_min_stack_byte_size < min_stack_byte_size)
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{
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if (::pthread_attr_setstacksize (&thread_attr, min_stack_byte_size) == 0)
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thread_attr_ptr = &thread_attr;
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}
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}
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}
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}
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int err = ::pthread_create(&thread, thread_attr_ptr, HostNativeThread::ThreadCreateTrampoline, info_ptr);
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if (destroy_attr)
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::pthread_attr_destroy(&thread_attr);
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error.SetError(err, eErrorTypePOSIX);
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#endif
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if (error_ptr)
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*error_ptr = error;
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if (!error.Success())
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thread = LLDB_INVALID_HOST_THREAD;
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return HostThread(thread);
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}
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