hw/9pfs: Add yield support for pwritev coroutine

[qemu.git] / osdep.h

diff --git a/osdep.h b/osdep.h
index 87f024b127ce2a75c1d315dff89c69ca0206cb81..252d050e6267f8eba1255fe270c1de4f61867d7c 100644 (file)
--- a/osdep.h
+++ b/osdep.h
@@ -2,11 +2,14 @@
 #define QEMU_OSDEP_H
 
 #include <stdarg.h>
 #define QEMU_OSDEP_H
 
 #include <stdarg.h>

+#include <stddef.h>

 #ifdef __OpenBSD__
 #include <sys/types.h>
 #include <sys/signal.h>
 #endif
 
 #ifdef __OpenBSD__
 #include <sys/types.h>
 #include <sys/signal.h>
 #endif
 

+#include <sys/time.h>
+

 #ifndef glue
 #define xglue(x, y) x ## y
 #define glue(x, y) xglue(x, y)
 #ifndef glue
 #define xglue(x, y) x ## y
 #define glue(x, y) xglue(x, y)


@@ -23,7 +26,7 @@
 #define unlikely(x)   __builtin_expect(!!(x), 0)
 #endif
 
 #define unlikely(x)   __builtin_expect(!!(x), 0)
 #endif
 

-#ifndef offsetof
+#ifdef CONFIG_NEED_OFFSETOF

 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
 #endif
 #ifndef container_of
 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
 #endif
 #ifndef container_of


@@ -32,6 +35,19 @@
         (type *) ((char *) __mptr - offsetof(type, member));})
 #endif
 
         (type *) ((char *) __mptr - offsetof(type, member));})
 #endif
 

+/* Convert from a base type to a parent type, with compile time checking.  */
+#ifdef __GNUC__
+#define DO_UPCAST(type, field, dev) ( __extension__ ( { \
+    char __attribute__((unused)) offset_must_be_zero[ \
+        -offsetof(type, field)]; \
+    container_of(dev, type, field);}))
+#else
+#define DO_UPCAST(type, field, dev) container_of(dev, type, field)
+#endif
+
+#define typeof_field(type, field) typeof(((type *)0)->field)
+#define type_check(t1,t2) ((t1*)0 - (t2*)0)
+

 #ifndef MIN
 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
 #endif
 #ifndef MIN
 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
 #endif


@@ -39,16 +55,19 @@
 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
 #endif
 
 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
 #endif
 

+#ifndef DIV_ROUND_UP
+#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+#endif
+

 #ifndef ARRAY_SIZE
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 #endif
 
 #ifndef always_inline
 #ifndef ARRAY_SIZE
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 #endif
 
 #ifndef always_inline

-#if (__GNUC__ < 3) || defined(__APPLE__)
-#define always_inline inline
-#else
-#define always_inline __attribute__ (( always_inline )) __inline__
-#define inline always_inline
+#if !((__GNUC__ < 3) || defined(__APPLE__))
+#ifdef __OPTIMIZE__
+#define inline __attribute__ (( always_inline )) __inline__
+#endif

 #endif
 #else
 #define inline always_inline
 #endif
 #else
 #define inline always_inline


@@ -62,30 +81,79 @@
 
 #define qemu_printf printf
 
 
 #define qemu_printf printf
 

-#if defined (__GNUC__) && defined (__GNUC_MINOR_)
+#if defined (__GNUC__) && defined (__GNUC_MINOR__)

 # define QEMU_GNUC_PREREQ(maj, min) \
          ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
 #else
 # define QEMU_GNUC_PREREQ(maj, min) 0
 #endif
 
 # define QEMU_GNUC_PREREQ(maj, min) \
          ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
 #else
 # define QEMU_GNUC_PREREQ(maj, min) 0
 #endif
 

+int qemu_daemon(int nochdir, int noclose);

 void *qemu_memalign(size_t alignment, size_t size);
 void *qemu_vmalloc(size_t size);
 void qemu_vfree(void *ptr);
 
 void *qemu_memalign(size_t alignment, size_t size);
 void *qemu_vmalloc(size_t size);
 void qemu_vfree(void *ptr);
 

+#define QEMU_MADV_INVALID -1
+
+#if defined(CONFIG_MADVISE)
+
+#define QEMU_MADV_WILLNEED  MADV_WILLNEED
+#define QEMU_MADV_DONTNEED  MADV_DONTNEED
+#ifdef MADV_DONTFORK
+#define QEMU_MADV_DONTFORK  MADV_DONTFORK
+#else
+#define QEMU_MADV_DONTFORK  QEMU_MADV_INVALID
+#endif
+#ifdef MADV_MERGEABLE
+#define QEMU_MADV_MERGEABLE MADV_MERGEABLE
+#else
+#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID
+#endif
+
+#elif defined(CONFIG_POSIX_MADVISE)
+
+#define QEMU_MADV_WILLNEED  POSIX_MADV_WILLNEED
+#define QEMU_MADV_DONTNEED  POSIX_MADV_DONTNEED
+#define QEMU_MADV_DONTFORK  QEMU_MADV_INVALID
+#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID
+
+#else /* no-op */
+
+#define QEMU_MADV_WILLNEED  QEMU_MADV_INVALID
+#define QEMU_MADV_DONTNEED  QEMU_MADV_INVALID
+#define QEMU_MADV_DONTFORK  QEMU_MADV_INVALID
+#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID
+
+#endif
+
+int qemu_madvise(void *addr, size_t len, int advice);
+
+#if defined(__HAIKU__) && defined(__i386__)
+#define FMT_pid "%ld"
+#elif defined(WIN64)
+#define FMT_pid "%" PRId64
+#else
+#define FMT_pid "%d"
+#endif
+

 int qemu_create_pidfile(const char *filename);
 int qemu_create_pidfile(const char *filename);

+int qemu_get_thread_id(void);

 
 #ifdef _WIN32
 
 #ifdef _WIN32

-int ffs(int i);
-
-typedef struct {
-    long tv_sec;
-    long tv_usec;
-} qemu_timeval;
-int qemu_gettimeofday(qemu_timeval *tp);
+static inline void qemu_timersub(const struct timeval *val1,
+                                 const struct timeval *val2,
+                                 struct timeval *res)
+{
+    res->tv_sec = val1->tv_sec - val2->tv_sec;
+    if (val1->tv_usec < val2->tv_usec) {
+        res->tv_sec--;
+        res->tv_usec = val1->tv_usec - val2->tv_usec + 1000 * 1000;
+    } else {
+        res->tv_usec = val1->tv_usec - val2->tv_usec;
+    }
+}

 #else
 #else

-typedef struct timeval qemu_timeval;
-#define qemu_gettimeofday(tp) gettimeofday(tp, NULL);
-#endif /* !_WIN32 */
+#define qemu_timersub timersub
+#endif

 
 #endif
 
 #endif