Register Linux dyntick timer as per-thread signal

[qemu.git] / os-win32.c

diff --git a/os-win32.c b/os-win32.c
index 5a464cc88a648f8072950c4b562443aec7f373f3..b6652af7f3fb596217828d7786fea6a6005d774f 100644 (file)
--- a/os-win32.c
+++ b/os-win32.c
@@ -31,6 +31,22 @@
 #include <sys/time.h>
 #include "config-host.h"
 #include "sysemu.h"
+#include "qemu-options.h"
+
+/***********************************************************/
+/* Functions missing in mingw */
+
+int setenv(const char *name, const char *value, int overwrite)
+{
+    int result = 0;
+    if (overwrite || !getenv(name)) {
+        size_t length = strlen(name) + strlen(value) + 2;
+        char *string = qemu_malloc(length);
+        snprintf(string, length, "%s=%s", name, value);
+        result = putenv(string);
+    }
+    return result;
+}
 
 /***********************************************************/
 /* Polling handling */
@@ -109,3 +125,149 @@ void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
     if (found)
         w->num--;
 }
+
+void os_host_main_loop_wait(int *timeout)
+{
+    int ret, ret2, i;
+    PollingEntry *pe;
+
+    /* XXX: need to suppress polling by better using win32 events */
+    ret = 0;
+    for(pe = first_polling_entry; pe != NULL; pe = pe->next) {
+        ret |= pe->func(pe->opaque);
+    }
+    if (ret == 0) {
+        int err;
+        WaitObjects *w = &wait_objects;
+
+        qemu_mutex_unlock_iothread();
+        ret = WaitForMultipleObjects(w->num, w->events, FALSE, *timeout);
+        qemu_mutex_lock_iothread();
+        if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) {
+            if (w->func[ret - WAIT_OBJECT_0])
+                w->func[ret - WAIT_OBJECT_0](w->opaque[ret - WAIT_OBJECT_0]);
+
+            /* Check for additional signaled events */
+            for(i = (ret - WAIT_OBJECT_0 + 1); i < w->num; i++) {
+
+                /* Check if event is signaled */
+                ret2 = WaitForSingleObject(w->events[i], 0);
+                if(ret2 == WAIT_OBJECT_0) {
+                    if (w->func[i])
+                        w->func[i](w->opaque[i]);
+                } else if (ret2 == WAIT_TIMEOUT) {
+                } else {
+                    err = GetLastError();
+                    fprintf(stderr, "WaitForSingleObject error %d %d\n", i, err);
+                }
+            }
+        } else if (ret == WAIT_TIMEOUT) {
+        } else {
+            err = GetLastError();
+            fprintf(stderr, "WaitForMultipleObjects error %d %d\n", ret, err);
+        }
+    }
+
+    *timeout = 0;
+}
+
+static BOOL WINAPI qemu_ctrl_handler(DWORD type)
+{
+    exit(STATUS_CONTROL_C_EXIT);
+    return TRUE;
+}
+
+void os_setup_early_signal_handling(void)
+{
+    /* Note: cpu_interrupt() is currently not SMP safe, so we force
+       QEMU to run on a single CPU */
+    HANDLE h;
+    DWORD_PTR mask, smask;
+    int i;
+
+    SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
+
+    h = GetCurrentProcess();
+    if (GetProcessAffinityMask(h, &mask, &smask)) {
+        for(i = 0; i < 32; i++) {
+            if (mask & (1 << i))
+                break;
+        }
+        if (i != 32) {
+            mask = 1 << i;
+            SetProcessAffinityMask(h, mask);
+        }
+    }
+}
+
+/* Look for support files in the same directory as the executable.  */
+char *os_find_datadir(const char *argv0)
+{
+    char *p;
+    char buf[MAX_PATH];
+    DWORD len;
+
+    len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
+    if (len == 0) {
+        return NULL;
+    }
+
+    buf[len] = 0;
+    p = buf + len - 1;
+    while (p != buf && *p != '\\')
+        p--;
+    *p = 0;
+    if (access(buf, R_OK) == 0) {
+        return qemu_strdup(buf);
+    }
+    return NULL;
+}
+
+void os_set_line_buffering(void)
+{
+    setbuf(stdout, NULL);
+    setbuf(stderr, NULL);
+}
+
+/*
+ * Parse OS specific command line options.
+ * return 0 if option handled, -1 otherwise
+ */
+void os_parse_cmd_args(int index, const char *optarg)
+{
+    return;
+}
+
+void os_pidfile_error(void)
+{
+    fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
+}
+
+int qemu_create_pidfile(const char *filename)
+{
+    char buffer[128];
+    int len;
+    HANDLE file;
+    OVERLAPPED overlap;
+    BOOL ret;
+    memset(&overlap, 0, sizeof(overlap));
+
+    file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
+                     OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+
+    if (file == INVALID_HANDLE_VALUE) {
+        return -1;
+    }
+    len = snprintf(buffer, sizeof(buffer), FMT_pid "\n", getpid());
+    ret = WriteFileEx(file, (LPCVOID)buffer, (DWORD)len,
+                     &overlap, NULL);
+    if (ret == 0) {
+        return -1;
+    }
+    return 0;
+}
+
+int qemu_get_thread_id(void)
+{
+    return GetCurrentThreadId();
+}