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From 27ca56812d2140c774f9d2b67a2919ef47c69758 Mon Sep 17 00:00:00 2001
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From: Stefan Weil <sw@weilnetz.de>
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Date: Sat, 22 Sep 2012 22:26:19 +0200
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Subject: [PATCH] w32: Add implementation of gmtime_r, localtime_r
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Those functions are missing in MinGW.
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Some versions of MinGW-w64 include defines for gmtime_r and localtime_r.
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Older versions of these macros are buggy (they return a pointer to a
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static variable), therefore we don't want them. Newer versions are
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similar to the code used here, but without the memset.
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The implementation which is used here is not strictly reentrant,
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but sufficiently good for QEMU on w32 or w64.
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Signed-off-by: Stefan Weil <sw@weilnetz.de>
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[blauwirbel@gmail.com: added comment about locking]
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Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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(cherry picked from commit d3e8f95753114a827f9cd8e819b1d5cc8333f76b)
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Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
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---
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oslib-win32.c | 24 ++++++++++++++++++++++++
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qemu-os-win32.h | 6 ++++++
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2 files changed, 30 insertions(+)
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diff --git a/oslib-win32.c b/oslib-win32.c
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index ffbc6d0..51b33e8 100644
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--- a/oslib-win32.c
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+++ b/oslib-win32.c
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@@ -74,6 +74,30 @@ void qemu_vfree(void *ptr)
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VirtualFree(ptr, 0, MEM_RELEASE);
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}
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+/* FIXME: add proper locking */
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+struct tm *gmtime_r(const time_t *timep, struct tm *result)
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+{
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+ struct tm *p = gmtime(timep);
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+ memset(result, 0, sizeof(*result));
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+ if (p) {
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+ *result = *p;
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+ p = result;
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+ }
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+ return p;
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+}
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+
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+/* FIXME: add proper locking */
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+struct tm *localtime_r(const time_t *timep, struct tm *result)
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+{
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+ struct tm *p = localtime(timep);
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+ memset(result, 0, sizeof(*result));
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+ if (p) {
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+ *result = *p;
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+ p = result;
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+ }
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+ return p;
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+}
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+
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void socket_set_block(int fd)
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{
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unsigned long opt = 0;
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diff --git a/qemu-os-win32.h b/qemu-os-win32.h
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index b3e451b..8ba466d 100644
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--- a/qemu-os-win32.h
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+++ b/qemu-os-win32.h
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@@ -68,6 +68,12 @@
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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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+
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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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