Git Repo - qemu.git/blame_incremental

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Commit	Line	Data
	1	/*
	2	* os-win32.c
	3	*
	4	* Copyright (c) 2003-2008 Fabrice Bellard
	5	* Copyright (c) 2010 Red Hat, Inc.
	6	*
	7	* Permission is hereby granted, free of charge, to any person obtaining a copy
	8	* of this software and associated documentation files (the "Software"), to deal
	9	* in the Software without restriction, including without limitation the rights
	10	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	11	* copies of the Software, and to permit persons to whom the Software is
	12	* furnished to do so, subject to the following conditions:
	13	*
	14	* The above copyright notice and this permission notice shall be included in
	15	* all copies or substantial portions of the Software.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	18	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	19	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	20	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	21	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	22	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	23	* THE SOFTWARE.
	24	*/
	25	#include "qemu/osdep.h"
	26	#include <windows.h>
	27	#include <mmsystem.h>
	28	#include "sysemu/sysemu.h"
	29	#include "qemu-options.h"
	30
	31	/***********************************************************/
	32	/* Functions missing in mingw */
	33
	34	int setenv(const char name, const char value, int overwrite)
	35	{
	36	int result = 0;
	37	if (overwrite \|\| !getenv(name)) {
	38	size_t length = strlen(name) + strlen(value) + 2;
	39	char *string = g_malloc(length);
	40	snprintf(string, length, "%s=%s", name, value);
	41	result = putenv(string);
	42
	43	/* Windows takes a copy and does not continue to use our string.
	44	* Therefore it can be safely freed on this platform. POSIX code
	45	* typically has to leak the string because according to the spec it
	46	* becomes part of the environment.
	47	*/
	48	g_free(string);
	49	}
	50	return result;
	51	}
	52
	53	static BOOL WINAPI qemu_ctrl_handler(DWORD type)
	54	{
	55	qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_SIGNAL);
	56	/* Windows 7 kills application when the function returns.
	57	Sleep here to give QEMU a try for closing.
	58	Sleep period is 10000ms because Windows kills the program
	59	after 10 seconds anyway. */
	60	Sleep(10000);
	61
	62	return TRUE;
	63	}
	64
	65	static TIMECAPS mm_tc;
	66
	67	static void os_undo_timer_resolution(void)
	68	{
	69	timeEndPeriod(mm_tc.wPeriodMin);
	70	}
	71
	72	void os_setup_early_signal_handling(void)
	73	{
	74	SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
	75	timeGetDevCaps(&mm_tc, sizeof(mm_tc));
	76	timeBeginPeriod(mm_tc.wPeriodMin);
	77	atexit(os_undo_timer_resolution);
	78	}
	79
	80	/* Look for support files in the same directory as the executable. */
	81	char *os_find_datadir(void)
	82	{
	83	return qemu_get_exec_dir();
	84	}
	85
	86	void os_set_line_buffering(void)
	87	{
	88	setbuf(stdout, NULL);
	89	setbuf(stderr, NULL);
	90	}
	91
	92	/*
	93	* Parse OS specific command line options.
	94	* return 0 if option handled, -1 otherwise
	95	*/
	96	void os_parse_cmd_args(int index, const char *optarg)
	97	{
	98	return;
	99	}
	100
	101	int qemu_create_pidfile(const char *filename)
	102	{
	103	char buffer[128];
	104	int len;
	105	HANDLE file;
	106	OVERLAPPED overlap;
	107	BOOL ret;
	108	memset(&overlap, 0, sizeof(overlap));
	109
	110	file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
	111	OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
	112
	113	if (file == INVALID_HANDLE_VALUE) {
	114	return -1;
	115	}
	116	len = snprintf(buffer, sizeof(buffer), "%d\n", getpid());
	117	ret = WriteFile(file, (LPCVOID)buffer, (DWORD)len,
	118	NULL, &overlap);
	119	CloseHandle(file);
	120	if (ret == 0) {
	121	return -1;
	122	}
	123	return 0;
	124	}