888a6bc63c
In certain scenario, latency induced by paging is significant and memory locking is needed. Also, in the scenario with untrusted guests, latency improvement due to mlock is desired. This patch introduces a following new option to mlock guest and qemu memory: -realtime mlock=on|off Signed-off-by: Satoru Moriya <satoru.moriya@hds.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1366382526-26146-1-git-send-email-pbonzini@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
115 lines
3.5 KiB
C
115 lines
3.5 KiB
C
/*
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* win32 specific declarations
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) 2010 Jes Sorensen <Jes.Sorensen@redhat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef QEMU_OS_WIN32_H
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#define QEMU_OS_WIN32_H
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#include <windows.h>
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#include <winsock2.h>
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/* Workaround for older versions of MinGW. */
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#ifndef ECONNREFUSED
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# define ECONNREFUSED WSAECONNREFUSED
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#endif
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#ifndef EINPROGRESS
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# define EINPROGRESS WSAEINPROGRESS
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#endif
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#ifndef EHOSTUNREACH
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# define EHOSTUNREACH WSAEHOSTUNREACH
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#endif
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#ifndef EINTR
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# define EINTR WSAEINTR
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#endif
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#ifndef EINPROGRESS
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# define EINPROGRESS WSAEINPROGRESS
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#endif
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#ifndef ENETUNREACH
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# define ENETUNREACH WSAENETUNREACH
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#endif
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#ifndef ENOTCONN
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# define ENOTCONN WSAENOTCONN
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#endif
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#ifndef EWOULDBLOCK
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# define EWOULDBLOCK WSAEWOULDBLOCK
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#endif
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#if defined(_WIN64)
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/* On w64, setjmp is implemented by _setjmp which needs a second parameter.
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* If this parameter is NULL, longjump does no stack unwinding.
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* That is what we need for QEMU. Passing the value of register rsp (default)
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* lets longjmp try a stack unwinding which will crash with generated code. */
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# undef setjmp
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# define setjmp(env) _setjmp(env, NULL)
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#endif
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/* QEMU uses sigsetjmp()/siglongjmp() as the portable way to specify
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* "longjmp and don't touch the signal masks". Since we know that the
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* savemask parameter will always be zero we can safely define these
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* in terms of setjmp/longjmp on Win32.
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*/
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#define sigjmp_buf jmp_buf
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#define sigsetjmp(env, savemask) setjmp(env)
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#define siglongjmp(env, val) longjmp(env, val)
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/* Declaration of ffs() is missing in MinGW's strings.h. */
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int ffs(int i);
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/* Missing POSIX functions. Don't use MinGW-w64 macros. */
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#undef gmtime_r
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struct tm *gmtime_r(const time_t *timep, struct tm *result);
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#undef localtime_r
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struct tm *localtime_r(const time_t *timep, struct tm *result);
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char *strtok_r(char *str, const char *delim, char **saveptr);
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static inline void os_setup_signal_handling(void) {}
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static inline void os_daemonize(void) {}
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static inline void os_setup_post(void) {}
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void os_set_line_buffering(void);
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static inline void os_set_proc_name(const char *dummy) {}
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#if !defined(EPROTONOSUPPORT)
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# define EPROTONOSUPPORT EINVAL
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#endif
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int setenv(const char *name, const char *value, int overwrite);
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typedef struct {
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long tv_sec;
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long tv_usec;
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} qemu_timeval;
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int qemu_gettimeofday(qemu_timeval *tp);
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static inline bool is_daemonized(void)
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{
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return false;
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}
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static inline int os_mlock(void)
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{
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return -ENOSYS;
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}
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#endif
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