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/**
* \file
* File System Watcher internal calls
*
* Authors:
* Gonzalo Paniagua Javier (gonzalo@ximian.com)
*
* Copyright 2004-2009 Novell, Inc (http://www.novell.com)
* Licensed under the MIT license. See LICENSE file in the project root for full license information.
*/
#include <config.h>
#include <mono/utils/mono-compiler.h>
#if !ENABLE_NETCORE
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_EVENT_H
#include <sys/event.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <mono/metadata/appdomain.h>
#include <mono/metadata/exception.h>
#include <mono/metadata/filewatcher.h>
#include <mono/metadata/marshal.h>
#include <mono/metadata/icall-decl.h>
#include <mono/utils/mono-dl.h>
#include <mono/utils/mono-io-portability.h>
#include <mono/metadata/w32error.h>
#ifdef HOST_WIN32
/*
* TODO:
* We use the managed watcher on windows, so the code inside this #if is never used
*/
gint
ves_icall_System_IO_FSW_SupportsFSW (void)
{
return 1;
}
int
ves_icall_System_IO_FAMW_InternalFAMNextEvent (gpointer conn,
MonoStringHandleOut filename,
int *code,
int *reqnum, MonoError *error)
{
return FALSE;
}
#else
static int (*FAMNextEvent) (gpointer, gpointer);
#if defined(HAVE_SYS_INOTIFY_H)
#include <sys/inotify.h>
#endif
gint
ves_icall_System_IO_FSW_SupportsFSW (void)
{
#if defined(__APPLE__)
if (getenv ("MONO_DARWIN_USE_KQUEUE_FSW"))
return 3; /* kqueue */
else
return 6; /* CoreFX */
#elif defined(HAVE_SYS_INOTIFY_H)
int inotify_instance = inotify_init ();
if (inotify_instance == -1)
return 0; /* DefaultWatcher */
close (inotify_instance);
return 6; /* CoreFX */
#elif HAVE_KQUEUE
return 3; /* kqueue */
#else
MonoDl *fam_module;
int lib_used = 4; /* gamin */
char *err;
fam_module = mono_dl_open ("libgamin-1.so", MONO_DL_LAZY, NULL);
if (fam_module == NULL) {
lib_used = 2; /* FAM */
fam_module = mono_dl_open ("libfam.so", MONO_DL_LAZY, NULL);
}
if (fam_module == NULL)
return 0; /* DefaultWatcher */
err = mono_dl_symbol (fam_module, "FAMNextEvent", (gpointer *) &FAMNextEvent);
g_free (err);
if (FAMNextEvent == NULL)
return 0;
return lib_used; /* DefaultWatcher */
#endif
}
/* Almost copied from fam.h. Weird, I know */
typedef struct {
gint reqnum;
} FAMRequest;
typedef struct FAMEvent {
gpointer fc;
FAMRequest fr;
gchar *hostname;
gchar filename [PATH_MAX];
gpointer userdata;
gint code;
} FAMEvent;
int
ves_icall_System_IO_FAMW_InternalFAMNextEvent (gpointer conn,
MonoStringHandleOut filename,
int *code,
int *reqnum,
MonoError *error)
{
FAMEvent ev;
if (FAMNextEvent (conn, &ev) == 1) {
MONO_HANDLE_ASSIGN_RAW (filename, mono_string_new_checked (mono_domain_get (), ev.filename, error));
return_val_if_nok (error, FALSE);
*code = ev.code;
*reqnum = ev.fr.reqnum;
return TRUE;
}
return FALSE;
}
#endif
#if HAVE_KQUEUE
static void
interrupt_kevent (gpointer data)
{
int *kq_ptr = (int*)data;
/* Interrupt the kevent () call by closing the fd */
close (*kq_ptr);
/* Signal to managed code that the fd is closed */
*kq_ptr = -1;
}
/*
* ves_icall_System_IO_KqueueMonitor_kevent_notimeout:
*
* Call kevent (), while handling runtime interruptions.
*/
int
ves_icall_System_IO_KqueueMonitor_kevent_notimeout (int *kq_ptr, gpointer changelist, int nchanges, gpointer eventlist, int nevents)
{
int res;
gboolean interrupted;
mono_thread_info_install_interrupt (interrupt_kevent, kq_ptr, &interrupted);
if (interrupted) {
close (*kq_ptr);
*kq_ptr = -1;
return -1;
}
MONO_ENTER_GC_SAFE;
res = kevent (*kq_ptr, (const struct kevent*)changelist, nchanges, (struct kevent*)eventlist, nevents, NULL);
MONO_EXIT_GC_SAFE;
mono_thread_info_uninstall_interrupt (&interrupted);
return res;
}
#else
int
ves_icall_System_IO_KqueueMonitor_kevent_notimeout (int *kq_ptr, gpointer changelist, int nchanges, gpointer eventlist, int nevents)
{
g_assert_not_reached ();
return -1;
}
#endif /* #if HAVE_KQUEUE */
#else
MONO_EMPTY_SOURCE_FILE (filewatcher);
#endif /* !ENABLE_NETCORE */
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