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authorglx <glx@openttd.org>2009-01-12 14:45:20 +0000
committerglx <glx@openttd.org>2009-01-12 14:45:20 +0000
commite99335c085f0c50fd674924714f9499bdff5b08f (patch)
tree7ad59a726b66efd0e0fffbce9b35ea19cdd70241 /src
parent53ca48efe202a10404351b51006b503c41fbe7f5 (diff)
downloadopenttd-e99335c085f0c50fd674924714f9499bdff5b08f.tar.xz
(svn r15008) -Revert (r12706): remove fibers
Diffstat (limited to 'src')
-rw-r--r--src/fiber.hpp53
-rw-r--r--src/fiber_thread.cpp151
-rw-r--r--src/fiber_win32.cpp206
-rw-r--r--src/thread_none.cpp16
4 files changed, 0 insertions, 426 deletions
diff --git a/src/fiber.hpp b/src/fiber.hpp
deleted file mode 100644
index e67dc4e9e..000000000
--- a/src/fiber.hpp
+++ /dev/null
@@ -1,53 +0,0 @@
-/* $Id$ */
-
-/** @file fiber.hpp Base for all fiber related classes. */
-
-#ifndef FIBER_HPP
-#define FIBER_HPP
-
-typedef void (CDECL *FiberFunc)(void *);
-
-class Fiber {
-public:
- /**
- * Switch to this fiber.
- */
- virtual void SwitchToFiber() = 0;
-
- /**
- * Exit a fiber.
- */
- virtual void Exit() = 0;
-
- /**
- * Check if a fiber is running.
- */
- virtual bool IsRunning() = 0;
-
- /**
- * Get the 'param' data of the Fiber.
- */
- virtual void *GetFiberData() = 0;
-
- /**
- * Virtual Destructor to mute warnings.
- */
- virtual ~Fiber() {};
-
- /**
- * Create a new fiber, calling proc(param) when running.
- */
- static Fiber *New(FiberFunc proc, void *param);
-
- /**
- * Attach a current thread to a new fiber.
- */
- static Fiber *AttachCurrent(void *param);
-
- /**
- * Get the 'param' data of the current active Fiber.
- */
- static void *GetCurrentFiberData();
-};
-
-#endif /* FIBER_HPP */
diff --git a/src/fiber_thread.cpp b/src/fiber_thread.cpp
deleted file mode 100644
index 5155b5519..000000000
--- a/src/fiber_thread.cpp
+++ /dev/null
@@ -1,151 +0,0 @@
-/* $Id$ */
-
-/** @file fiber_thread.cpp ThreadObject implementation of Fiber. */
-
-#include "stdafx.h"
-#include "fiber.hpp"
-#include "thread.h"
-#include <stdlib.h>
-
-class Fiber_Thread : public Fiber {
-private:
- ThreadObject *m_thread;
- FiberFunc m_proc;
- void *m_param;
- bool m_attached;
- ThreadSemaphore *m_sem;
- bool m_kill;
-
- static Fiber_Thread *s_current;
- static Fiber_Thread *s_main;
-
-public:
- /**
- * Create a ThreadObject fiber and start it, calling proc(param).
- */
- Fiber_Thread(FiberFunc proc, void *param) :
- m_thread(NULL),
- m_proc(proc),
- m_param(param),
- m_attached(false),
- m_kill(false)
- {
- this->m_sem = ThreadSemaphore::New();
- /* Create a thread and start stFiberProc */
- this->m_thread = ThreadObject::New(&stFiberProc, this);
- }
-
- /**
- * Create a ThreadObject fiber and attach current thread to it.
- */
- Fiber_Thread(void *param) :
- m_thread(NULL),
- m_proc(NULL),
- m_param(param),
- m_attached(true),
- m_kill(false)
- {
- this->m_sem = ThreadSemaphore::New();
- /* Attach the current thread to this Fiber */
- this->m_thread = ThreadObject::AttachCurrent();
- /* We are the current thread */
- if (s_current == NULL) s_current = this;
- if (s_main == NULL) s_main = this;
- }
-
- ~Fiber_Thread()
- {
- /* Remove the thread if needed */
- if (this->m_thread != NULL) {
- assert(this->m_attached || !this->m_thread->IsRunning());
- delete this->m_thread;
- }
- /* Remove the semaphore */
- delete this->m_sem;
- }
-
- /* virtual */ void SwitchToFiber()
- {
- /* You can't switch to yourself */
- assert(s_current != this);
- Fiber_Thread *cur = s_current;
-
- /* Continue the execution of 'this' Fiber */
- this->m_sem->Set();
- /* Hold the execution of the current Fiber */
- cur->m_sem->Wait();
- if (this->m_kill) {
- /* If the thread we switched too was killed, join it so it can finish quiting */
- this->m_thread->Join();
- }
- /* If we continue, we are the current thread */
- s_current = cur;
- }
-
- /* virtual */ void Exit()
- {
- /* Kill off our thread */
- this->m_kill = true;
- this->m_thread->Exit();
- }
-
- /* virtual */ bool IsRunning()
- {
- if (this->m_thread == NULL) return false;
- return this->m_thread->IsRunning();
- }
-
- /* virtual */ void *GetFiberData()
- {
- return this->m_param;
- }
-
- static Fiber_Thread *GetCurrentFiber()
- {
- return s_current;
- }
-
-private:
- /**
- * First function which is called within the fiber.
- */
- static void stFiberProc(void *fiber)
- {
- Fiber_Thread *cur = (Fiber_Thread *)fiber;
- /* Now suspend the thread until we get SwitchToFiber() for the first time */
- cur->m_sem->Wait();
- /* If we continue, we are the current thread */
- s_current = cur;
-
- try {
- cur->m_proc(cur->m_param);
- } catch (...) {
- /* Unlock the main thread */
- s_main->m_sem->Set();
- throw;
- }
- }
-};
-
-/* Initialize the static member of Fiber_Thread */
-/* static */ Fiber_Thread *Fiber_Thread::s_current = NULL;
-/* static */ Fiber_Thread *Fiber_Thread::s_main = NULL;
-
-#ifndef WIN32
-
-/* static */ Fiber *Fiber::New(FiberFunc proc, void *param)
-{
- return new Fiber_Thread(proc, param);
-}
-
-/* static */ Fiber *Fiber::AttachCurrent(void *param)
-{
- return new Fiber_Thread(param);
-}
-
-/* static */ void *Fiber::GetCurrentFiberData()
-{
- return Fiber_Thread::GetCurrentFiber()->GetFiberData();
-}
-
-#endif /* WIN32 */
diff --git a/src/fiber_win32.cpp b/src/fiber_win32.cpp
deleted file mode 100644
index 61718188c..000000000
--- a/src/fiber_win32.cpp
+++ /dev/null
@@ -1,206 +0,0 @@
-/* $Id$ */
-
-/** @file fiber_win32.cpp Win32 implementation of Fiber. */
-
-#include "stdafx.h"
-#include "fiber.hpp"
-#include <stdlib.h>
-#include <windows.h>
-#include <process.h>
-
-class Fiber_Win32 : public Fiber {
-private:
- LPVOID m_fiber;
- FiberFunc m_proc;
- void *m_param;
- bool m_attached;
-
- static Fiber_Win32 *s_main;
-
-public:
- /**
- * Create a win32 fiber and start it, calling proc(param).
- */
- Fiber_Win32(FiberFunc proc, void *param) :
- m_fiber(NULL),
- m_proc(proc),
- m_param(param),
- m_attached(false)
- {
- CreateFiber();
- }
-
- /**
- * Create a win32 fiber and attach current thread to it.
- */
- Fiber_Win32(void *param) :
- m_fiber(NULL),
- m_proc(NULL),
- m_param(param),
- m_attached(true)
- {
- ConvertThreadToFiber();
- if (s_main == NULL) s_main = this;
- }
-
- /* virtual */ ~Fiber_Win32()
- {
- if (this->m_fiber != NULL) {
- if (this->m_attached) {
- this->ConvertFiberToThread();
- } else {
- this->DeleteFiber();
- }
- }
- }
-
- /* virtual */ void SwitchToFiber()
- {
- typedef VOID (WINAPI *FnSwitchToFiber)(LPVOID fiber);
-
- static FnSwitchToFiber fnSwitchToFiber = (FnSwitchToFiber)stGetProcAddr("SwitchToFiber");
- assert(fnSwitchToFiber != NULL);
-
- fnSwitchToFiber(this->m_fiber);
- }
-
- /* virtual */ void Exit()
- {
- /* Simply switch back to the main fiber, we kill the fiber sooner or later */
- s_main->SwitchToFiber();
- }
-
- /* virtual */ bool IsRunning()
- {
- return this->m_fiber != NULL;
- }
-
- /* virtual */ void *GetFiberData()
- {
- return this->m_param;
- }
-
- /**
- * Win95 doesn't have Fiber support. So check if we have Fiber support,
- * and else fall back on Fiber_Thread.
- */
- static bool IsSupported()
- {
- static bool first_run = true;
- static bool is_supported = false;
-
- if (first_run) {
- first_run = false;
- static const char *names[] = {
- "ConvertThreadToFiber",
- "CreateFiber",
- "DeleteFiber",
- "ConvertFiberToThread",
- "SwitchToFiber"};
- for (size_t i = 0; i < lengthof(names); i++) {
- if (stGetProcAddr(names[i]) == NULL) return false;
- }
- is_supported = true;
- }
- return is_supported;
- }
-
-private:
- /**
- * Get a function from kernel32.dll.
- * @param name Function to get.
- * @return Proc to the function, or NULL when not found.
- */
- static FARPROC stGetProcAddr(const char *name)
- {
- static HMODULE hKernel = LoadLibraryA("kernel32.dll");
- return GetProcAddress(hKernel, name);
- }
-
- /**
- * First function which is called within the fiber.
- */
- static VOID CALLBACK stFiberProc(LPVOID fiber)
- {
- Fiber_Win32 *cur = (Fiber_Win32 *)fiber;
- cur->m_proc(cur->m_param);
- }
-
- /**
- * Delete a fiber.
- */
- void DeleteFiber()
- {
- typedef VOID (WINAPI *FnDeleteFiber)(LPVOID lpFiber);
-
- static FnDeleteFiber fnDeleteFiber = (FnDeleteFiber)stGetProcAddr("DeleteFiber");
- assert(fnDeleteFiber != NULL);
-
- fnDeleteFiber(this->m_fiber);
- this->m_fiber = NULL;
- }
-
- /**
- * Convert a current thread to a fiber.
- */
- void ConvertThreadToFiber()
- {
- typedef LPVOID (WINAPI *FnConvertThreadToFiber)(LPVOID lpParameter);
-
- static FnConvertThreadToFiber fnConvertThreadToFiber = (FnConvertThreadToFiber)stGetProcAddr("ConvertThreadToFiber");
- assert(fnConvertThreadToFiber != NULL);
-
- this->m_fiber = fnConvertThreadToFiber(this);
- }
-
- /**
- * Create a new fiber.
- */
- void CreateFiber()
- {
- typedef LPVOID (WINAPI *FnCreateFiber)(SIZE_T dwStackSize, LPFIBER_START_ROUTINE lpStartAddress, LPVOID lpParameter);
-
- static FnCreateFiber fnCreateFiber = (FnCreateFiber)stGetProcAddr("CreateFiber");
- assert(fnCreateFiber != NULL);
-
- this->m_fiber = fnCreateFiber(0, &stFiberProc, this);
- }
-
- /**
- * Convert a fiber back to a thread.
- */
- void ConvertFiberToThread()
- {
- typedef BOOL (WINAPI *FnConvertFiberToThread)();
-
- static FnConvertFiberToThread fnConvertFiberToThread = (FnConvertFiberToThread)stGetProcAddr("ConvertFiberToThread");
- assert(fnConvertFiberToThread != NULL);
-
- fnConvertFiberToThread();
- this->m_fiber = NULL;
- }
-};
-
-/* Initialize the static member of Fiber_Win32 */
-/* static */ Fiber_Win32 *Fiber_Win32::s_main = NULL;
-
-/* Include Fiber_Thread, as Win95 needs it */
-#include "fiber_thread.cpp"
-
-/* static */ Fiber *Fiber::New(FiberFunc proc, void *param)
-{
- if (Fiber_Win32::IsSupported()) return new Fiber_Win32(proc, param);
- return new Fiber_Thread(proc, param);
-}
-
-/* static */ Fiber *Fiber::AttachCurrent(void *param)
-{
- if (Fiber_Win32::IsSupported()) return new Fiber_Win32(param);
- return new Fiber_Thread(param);
-}
-
-/* static */ void *Fiber::GetCurrentFiberData()
-{
- if (Fiber_Win32::IsSupported()) return ((Fiber *)::GetFiberData())->GetFiberData();
- return Fiber_Thread::GetCurrentFiber()->GetFiberData();
-}
diff --git a/src/thread_none.cpp b/src/thread_none.cpp
index 6209e89a7..a5599dff1 100644
--- a/src/thread_none.cpp
+++ b/src/thread_none.cpp
@@ -4,7 +4,6 @@
#include "stdafx.h"
#include "thread.h"
-#include "fiber.hpp"
/* static */ ThreadObject *ThreadObject::New(OTTDThreadFunc proc, void *param)
{
@@ -25,18 +24,3 @@
{
return NULL;
}
-
-/* static */ Fiber *Fiber::New(FiberFunc proc, void *param)
-{
- return NULL;
-}
-
-/* static */ Fiber *Fiber::AttachCurrent(void *param)
-{
- return NULL;
-}
-
-/* static */ void *Fiber::GetCurrentFiberData()
-{
- return NULL;
-}