Add a compile option to choose between thread implementations

CMakeLists.txt

@@ -64,6 +64,7 @@ option(MUNT "MUNT" ON)
 option(VRAMDUMP "Video RAM dumping" OFF)
 option(DINPUT "DirectInput" OFF)
 option(DISCORD "Discord integration" ON)
+option(CPPTHRAD "C++11 threads" ON)
 
 option(NEW_DYNAREC "Use the PCem v15 (\"new\") dynamic recompiler" OFF)
 

src/CMakeLists.txt

@@ -34,10 +34,14 @@ endif()
 
 # WIN32 marks us as a GUI app on Windows
 # MACOSX_BUNDLE prepares a macOS application bundle including with the app icon
-add_executable(86Box WIN32 MACOSX_BUNDLE 86box.c config.c cpp11_thread.cpp log.c random.c timer.c io.c acpi.c apm.c
+add_executable(86Box WIN32 MACOSX_BUNDLE 86box.c config.c log.c random.c timer.c io.c acpi.c apm.c
 	dma.c ddma.c nmi.c pic.c pit.c port_6x.c port_92.c ppi.c pci.c mca.c usb.c
 	device.c nvr.c nvr_at.c nvr_ps2.c rtmidi_midi.cpp ${APP_ICON_MACOSX})
 
+if(CPPTHREADS)
+	target_sources(plat PRIVATE cpp11_thread.cpp)
+endif()
+
 if(APPLE)
 	target_link_libraries(86Box "-framework AppKit")
 endif()

src/unix/CMakeLists.txt

@@ -8,7 +8,7 @@ if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
 else()
     set(PLAT_SOURCES unix_midi.c)
 endif()
-add_library(plat STATIC ${PLAT_SOURCES} unix_thread.c)
+add_library(plat STATIC ${PLAT_SOURCES})
 add_library(ui STATIC unix.c unix_sdl.c unix_cdrom.c)
 target_compile_definitions(ui PUBLIC _FILE_OFFSET_BITS=64)
 target_link_libraries(ui dl)
@@ -28,6 +28,10 @@ if (ALSA_FOUND)
     target_link_libraries(plat ALSA::ALSA)
 endif()
 
-set(THREADS_PREFER_PTHREAD_FLAG TRUE)
-find_package(Threads REQUIRED)
-target_link_libraries(86Box Threads::Threads)
+if (NOT CPPTHREADS)
+    target_sources(plat PRIVATE unix_thread.c)
+
+    set(THREADS_PREFER_PTHREAD_FLAG TRUE)
+    find_package(Threads REQUIRED)
+    target_link_libraries(86Box Threads::Threads)
+endif()

src/win/CMakeLists.txt

@@ -23,6 +23,10 @@ add_library(ui OBJECT win_ui.c win_icon.c win_stbar.c win_sdl.c win_dialog.c win
 	win_jsconf.c win_media_menu.c win_preferences.c win_discord.c glad.c win_opengl.c
 	win_opengl_glslp.c 86Box.rc)
 
+if(NOT CPPTHREADS)
+	target_sources(plat PRIVATE win_thread.c)
+endif()
+
 if(MSVC)
 	# MSVC complains when we include the manifest from 86Box.rc...
 	# On the bright side, CMake supports passing the manifest as a source

src/win/Makefile.mingw

@@ -163,6 +163,9 @@ endif
 ifndef DYNAREC
  DYNAREC	:= y
 endif
+ifndef CPPTHREADS
+ CPPTHREADS	:= cpp11
+endif
 ifeq ($(DYNAREC), y)
  ifeq ($(ARM), y)
   ifeq ($(NEW_DYNAREC), n)
@@ -370,6 +373,12 @@ MUNTOBJ		:= midi_mt32.o \
 		    Synth.o Tables.o TVA.o TVF.o TVP.o sha1.o c_interface.o
 endif
 
+ifeq ($(CPPTHREADS), y)
+THREADOBJ	:= cpp11_thread.o
+else
+THREADOBJ	:= win_thread.o
+endif
+
 ifeq ($(VNC), y)
 OPTS		+= -DUSE_VNC
 RFLAGS		+= -DUSE_VNC
@@ -464,7 +473,7 @@ CXXFLAGS	:= $(CFLAGS)
 #########################################################################
 #		Create the (final) list of objects to build.		#
 #########################################################################
-MAINOBJ		:= 86box.o config.o cpp11_thread.o log.o random.o timer.o io.o acpi.o apm.o dma.o ddma.o \
+MAINOBJ		:= 86box.o config.o log.o random.o timer.o io.o acpi.o apm.o dma.o ddma.o \
 		   nmi.o pic.o pit.o port_6x.o port_92.o ppi.o pci.o mca.o \
 		   usb.o device.o nvr.o nvr_at.o nvr_ps2.o rtmidi_midi.o \
 		   $(VNCOBJ)
@@ -693,7 +702,7 @@ endif
 OBJ		:= $(MAINOBJ) $(CPUOBJ) $(CHIPSETOBJ) $(MCHOBJ) $(DEVOBJ) $(MEMOBJ) \
 		   $(FDDOBJ) $(GAMEOBJ) $(CDROMOBJ) $(ZIPOBJ) $(MOOBJ) $(HDDOBJ) $(MINIVHDOBJ) \
 		   $(NETOBJ) $(PRINTOBJ) $(SCSIOBJ) $(SIOOBJ) $(SNDOBJ) $(VIDOBJ) $(VOODOOOBJ) \
-		   $(PLATOBJ) $(UIOBJ) $(FSYNTHOBJ) $(MUNTOBJ) $(DEVBROBJ) $(MINITRACEOBJ)
+		   $(PLATOBJ) $(UIOBJ) $(FSYNTHOBJ) $(MUNTOBJ) $(DEVBROBJ) $(MINITRACEOBJ) $(THREADOBJ)
 ifdef EXOBJ
 OBJ		+= $(EXOBJ)
 endif

src/win/win_thread.c

@@ -0,0 +1,183 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Implement threads and mutexes for the Win32 platform.
+ *
+ *
+ *
+ * Authors:	Sarah Walker, <http://pcem-emulator.co.uk/>
+ *		Fred N. van Kempen, <decwiz@yahoo.com>
+ *
+ *		Copyright 2008-2018 Sarah Walker.
+ *		Copyright 2017,2018 Fred N. van Kempen.
+ */
+#define UNICODE
+#define BITMAP WINDOWS_BITMAP
+#include <windows.h>
+#include <windowsx.h>
+#include <process.h>
+#undef BITMAP
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <wchar.h>
+#include <86box/86box.h>
+#include <86box/plat.h>
+
+
+typedef struct {
+    HANDLE handle;
+} win_event_t;
+
+
+thread_t *
+thread_create(void (*func)(void *param), void *param)
+{
+    uintptr_t bt = _beginthread(func, 0, param);
+    return((thread_t *)bt);
+}
+
+
+int
+thread_wait(thread_t *arg, int timeout)
+{
+    if (arg == NULL) return(0);
+
+    if (timeout == -1)
+	timeout = INFINITE;
+
+    if (WaitForSingleObject(arg, timeout)) return(1);
+
+    return(0);
+}
+
+
+event_t *
+thread_create_event(void)
+{
+    win_event_t *ev = malloc(sizeof(win_event_t));
+
+    ev->handle = CreateEvent(NULL, FALSE, FALSE, NULL);
+
+    return((event_t *)ev);
+}
+
+
+void
+thread_set_event(event_t *arg)
+{
+    win_event_t *ev = (win_event_t *)arg;
+
+    if (arg == NULL) return;
+
+    SetEvent(ev->handle);
+}
+
+
+void
+thread_reset_event(event_t *arg)
+{
+    win_event_t *ev = (win_event_t *)arg;
+
+    if (arg == NULL) return;
+
+    ResetEvent(ev->handle);
+}
+
+
+int
+thread_wait_event(event_t *arg, int timeout)
+{
+    win_event_t *ev = (win_event_t *)arg;
+
+    if (arg == NULL) return(0);
+
+    if (ev->handle == NULL) return(0);
+
+    if (timeout == -1)
+	timeout = INFINITE;
+
+    if (WaitForSingleObject(ev->handle, timeout)) return(1);
+
+    return(0);
+}
+
+
+void
+thread_destroy_event(event_t *arg)
+{
+    win_event_t *ev = (win_event_t *)arg;
+
+    if (arg == NULL) return;
+
+    CloseHandle(ev->handle);
+
+    free(ev);
+}
+
+
+mutex_t *
+thread_create_mutex(void)
+{    
+    mutex_t *mutex = malloc(sizeof(CRITICAL_SECTION));
+
+    InitializeCriticalSection(mutex);
+
+    return mutex;
+}
+
+
+mutex_t *
+thread_create_mutex_with_spin_count(unsigned int spin_count)
+{
+    mutex_t *mutex = malloc(sizeof(CRITICAL_SECTION));
+
+    InitializeCriticalSectionAndSpinCount(mutex, spin_count);
+
+    return mutex;
+}
+
+
+int
+thread_wait_mutex(mutex_t *mutex)
+{
+    if (mutex == NULL) return(0);
+
+    LPCRITICAL_SECTION critsec = (LPCRITICAL_SECTION)mutex;
+
+    EnterCriticalSection(critsec);
+
+    return 1;
+}
+
+
+int
+thread_release_mutex(mutex_t *mutex)
+{
+    if (mutex == NULL) return(0);
+
+    LPCRITICAL_SECTION critsec = (LPCRITICAL_SECTION)mutex;
+
+    LeaveCriticalSection(critsec);
+
+    return 1;
+}
+
+
+void
+thread_close_mutex(mutex_t *mutex)
+{
+    if (mutex == NULL) return;
+
+    LPCRITICAL_SECTION critsec = (LPCRITICAL_SECTION)mutex;
+
+    DeleteCriticalSection(critsec);
+
+    free(critsec);
+}