187 lines
4.2 KiB
C++
Executable File
187 lines
4.2 KiB
C++
Executable File
// Windows-specific code
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// Copyright (c) 2003 Jan Wassenberg
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// Contact info:
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// Jan.Wassenberg@stud.uni-karlsruhe.de
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// http://www.stud.uni-karlsruhe.de/~urkt/
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#include "precompiled.h"
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#include "lib.h"
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#include "win_internal.h"
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#include <crtdbg.h> // malloc debug
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#include <malloc.h>
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//
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// these override the portable stdio versions in sysdep.cpp
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// (they're more convenient)
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//
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void check_heap()
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{
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_heapchk();
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}
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void display_msg(const char* caption, const char* msg)
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{
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MessageBoxA(0, msg, caption, MB_ICONEXCLAMATION);
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}
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void wdisplay_msg(const wchar_t* caption, const wchar_t* msg)
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{
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MessageBoxW(0, msg, caption, MB_ICONEXCLAMATION);
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}
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// need to shoehorn printf-style variable params into
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// the OutputDebugString call.
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// - don't want to split into multiple calls - would add newlines to output.
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// - fixing Win32 _vsnprintf to return # characters that would be written,
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// as required by C99, looks difficult and unnecessary. if any other code
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// needs that, implement GNU vasprintf.
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// - fixed size buffers aren't nice, but much simpler than vasprintf-style
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// allocate+expand_until_it_fits. these calls are for quick debug output,
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// not loads of data, anyway.
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static const int MAX_CNT = 512;
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// max output size of 1 call of (w)debug_out (including \0)
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void debug_out(const char* fmt, ...)
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{
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char buf[MAX_CNT];
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buf[MAX_CNT-1] = '\0';
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va_list ap;
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va_start(ap, fmt);
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vsnprintf(buf, MAX_CNT-1, fmt, ap);
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va_end(ap);
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OutputDebugString(buf);
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}
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void wdebug_out(const wchar_t* fmt, ...)
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{
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wchar_t buf[MAX_CNT];
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buf[MAX_CNT-1] = L'\0';
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va_list ap;
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va_start(ap, fmt);
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vsnwprintf(buf, MAX_CNT-1, fmt, ap);
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va_end(ap);
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OutputDebugStringW(buf);
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}
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#ifndef NO_WINSOCK
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#pragma comment(lib, "ws2_32.lib")
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#endif
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// locking for win-specific code
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// several init functions are called on-demand, possibly from constructors.
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// can't guarantee POSIX static mutex init has been done by then.
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static CRITICAL_SECTION cs[NUM_CS];
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void win_lock(uint idx)
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{
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assert(idx < NUM_CS && "win_lock: invalid critical section index");
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EnterCriticalSection(&cs[idx]);
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}
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void win_unlock(uint idx)
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{
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assert(idx < NUM_CS && "win_unlock: invalid critical section index");
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LeaveCriticalSection(&cs[idx]);
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}
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// entry -> pre_libc -> WinMainCRTStartup -> WinMain -> pre_main -> main
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// at_exit is called as the last of the atexit handlers
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// (assuming, as documented in lib.cpp, constructors don't use atexit!)
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//
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// note: this way of getting control before main adds overhead
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// (setting up the WinMain parameters), but is simpler and safer than
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// SDL-style #define main SDL_main.
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static void at_exit(void)
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{
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for(int i = 0; i < NUM_CS; i++)
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DeleteCriticalSection(&cs[i]);
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// redirected to stdout.txt in pre_main_init;
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// close to avoid BoundsChecker warning.
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fclose(stdout);
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}
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// be very careful to avoid non-stateless libc functions!
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static inline void pre_libc_init()
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{
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#ifndef NO_WINSOCK
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char d[1024];
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WSAStartup(0x0002, d); // want 2.0
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atexit2(WSACleanup, 0, CC_STDCALL_0);
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#endif
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for(int i = 0; i < NUM_CS; i++)
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InitializeCriticalSection(&cs[i]);
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}
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static inline void pre_main_init()
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{
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#ifdef PARANOIA
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// force malloc et al to check the heap every call.
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// slower, but reports errors closer to where they occur.
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int flags = _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG);
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flags |= _CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_DELAY_FREE_MEM_DF;
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_CrtSetDbgFlag(flags);
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#endif
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atexit(at_exit);
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// real SDL will do this as well. no matter.
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// ignore BoundsChecker warning here.
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freopen("stdout.txt", "wt", stdout);
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}
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int entry()
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{
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pre_libc_init();
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return WinMainCRTStartup(); // calls _cinit, and then WinMain
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}
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int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
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{
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pre_main_init();
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return main(__argc, __argv);
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}
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