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-rw-r--r--src/core/iomgr/exec_ctx.c5
-rw-r--r--src/core/iomgr/exec_ctx.h5
-rw-r--r--src/core/iomgr/iocp_windows.c73
-rw-r--r--src/core/iomgr/iocp_windows.h2
-rw-r--r--src/core/iomgr/iomgr.c4
-rw-r--r--src/core/iomgr/iomgr_internal.h6
-rw-r--r--src/core/iomgr/iomgr_posix.c5
-rw-r--r--src/core/iomgr/iomgr_posix.h3
-rw-r--r--src/core/iomgr/iomgr_windows.c4
-rw-r--r--src/core/iomgr/pollset_windows.c155
-rw-r--r--src/core/iomgr/pollset_windows.h30
11 files changed, 206 insertions, 86 deletions
diff --git a/src/core/iomgr/exec_ctx.c b/src/core/iomgr/exec_ctx.c
index a830a27b0b..f2914d376e 100644
--- a/src/core/iomgr/exec_ctx.c
+++ b/src/core/iomgr/exec_ctx.c
@@ -35,16 +35,19 @@
#include <grpc/support/log.h>
-void grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) {
+int grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) {
+ int did_something = 0;
while (!grpc_closure_list_empty(exec_ctx->closure_list)) {
grpc_closure *c = exec_ctx->closure_list.head;
exec_ctx->closure_list.head = exec_ctx->closure_list.tail = NULL;
while (c != NULL) {
grpc_closure *next = c->next;
+ did_something = 1;
c->cb(exec_ctx, c->cb_arg, c->success);
c = next;
}
}
+ return did_something;
}
void grpc_exec_ctx_finish(grpc_exec_ctx *exec_ctx) {
diff --git a/src/core/iomgr/exec_ctx.h b/src/core/iomgr/exec_ctx.h
index f99aa038c5..aa0610cbea 100644
--- a/src/core/iomgr/exec_ctx.h
+++ b/src/core/iomgr/exec_ctx.h
@@ -61,8 +61,9 @@ struct grpc_exec_ctx {
{ GRPC_CLOSURE_LIST_INIT }
/** Flush any work that has been enqueued onto this grpc_exec_ctx.
- * Caller must guarantee that no interfering locks are held. */
-void grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx);
+ * Caller must guarantee that no interfering locks are held.
+ * Returns 1 if work was performed, 0 otherwise. */
+int grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx);
/** Finish any pending work for a grpc_exec_ctx. Must be called before
* the instance is destroyed, or work may be lost. */
void grpc_exec_ctx_finish(grpc_exec_ctx *exec_ctx);
diff --git a/src/core/iomgr/iocp_windows.c b/src/core/iomgr/iocp_windows.c
index c2f62a41b8..cf33d74366 100644
--- a/src/core/iomgr/iocp_windows.c
+++ b/src/core/iomgr/iocp_windows.c
@@ -50,13 +50,28 @@
static ULONG g_iocp_kick_token;
static OVERLAPPED g_iocp_custom_overlap;
-static gpr_event g_shutdown_iocp;
-static gpr_event g_iocp_done;
static gpr_atm g_custom_events = 0;
static HANDLE g_iocp;
-static void do_iocp_work(grpc_exec_ctx *exec_ctx) {
+static DWORD deadline_to_millis_timeout(gpr_timespec deadline,
+ gpr_timespec now) {
+ gpr_timespec timeout;
+ static const int max_spin_polling_us = 10;
+ if (gpr_time_cmp(deadline, gpr_inf_future(deadline.clock_type)) == 0) {
+ return INFINITE;
+ }
+ if (gpr_time_cmp(deadline, gpr_time_add(now, gpr_time_from_micros(
+ max_spin_polling_us,
+ GPR_TIMESPAN))) <= 0) {
+ return 0;
+ }
+ timeout = gpr_time_sub(deadline, now);
+ return gpr_time_to_millis(gpr_time_add(
+ timeout, gpr_time_from_nanos(GPR_NS_PER_MS - 1, GPR_TIMESPAN)));
+}
+
+void grpc_iocp_work(grpc_exec_ctx *exec_ctx, gpr_timespec deadline) {
BOOL success;
DWORD bytes = 0;
DWORD flags = 0;
@@ -66,10 +81,10 @@ static void do_iocp_work(grpc_exec_ctx *exec_ctx) {
grpc_winsocket_callback_info *info;
grpc_closure *closure = NULL;
success = GetQueuedCompletionStatus(g_iocp, &bytes, &completion_key,
- &overlapped, INFINITE);
- /* success = 0 and overlapped = NULL means the deadline got attained.
- Which is impossible. since our wait time is +inf */
- GPR_ASSERT(success || overlapped);
+ &overlapped, deadline_to_millis_timeout(deadline, gpr_now(deadline.clock_type)));
+ if (success == 0 && overlapped == NULL) {
+ return;
+ }
GPR_ASSERT(completion_key && overlapped);
if (overlapped == &g_iocp_custom_overlap) {
gpr_atm_full_fetch_add(&g_custom_events, -1);
@@ -104,34 +119,13 @@ static void do_iocp_work(grpc_exec_ctx *exec_ctx) {
info->has_pending_iocp = 1;
}
gpr_mu_unlock(&socket->state_mu);
- if (closure) {
- closure->cb(exec_ctx, closure->cb_arg, 1);
- }
-}
-
-static void iocp_loop(void *p) {
- grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
-
- while (gpr_atm_acq_load(&g_custom_events) ||
- !gpr_event_get(&g_shutdown_iocp)) {
- do_iocp_work(&exec_ctx);
- grpc_exec_ctx_flush(&exec_ctx);
- }
- grpc_exec_ctx_finish(&exec_ctx);
-
- gpr_event_set(&g_iocp_done, (void *)1);
+ grpc_exec_ctx_enqueue(exec_ctx, closure, 1);
}
void grpc_iocp_init(void) {
- gpr_thd_id id;
-
g_iocp =
CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, (ULONG_PTR)NULL, 0);
GPR_ASSERT(g_iocp);
-
- gpr_event_init(&g_iocp_done);
- gpr_event_init(&g_shutdown_iocp);
- gpr_thd_new(&id, iocp_loop, NULL, NULL);
}
void grpc_iocp_kick(void) {
@@ -143,13 +137,22 @@ void grpc_iocp_kick(void) {
GPR_ASSERT(success);
}
+void grpc_iocp_flush(void) {
+ grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+
+ do {
+ grpc_iocp_work(&exec_ctx, gpr_inf_past(GPR_CLOCK_MONOTONIC));
+ } while (grpc_exec_ctx_flush(&exec_ctx));
+}
+
void grpc_iocp_shutdown(void) {
- BOOL success;
- gpr_event_set(&g_shutdown_iocp, (void *)1);
- grpc_iocp_kick();
- gpr_event_wait(&g_iocp_done, gpr_inf_future(GPR_CLOCK_REALTIME));
- success = CloseHandle(g_iocp);
- GPR_ASSERT(success);
+ grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+ while (gpr_atm_acq_load(&g_custom_events)) {
+ grpc_iocp_work(&exec_ctx, gpr_inf_future(GPR_CLOCK_MONOTONIC));
+ grpc_exec_ctx_flush(&exec_ctx);
+ }
+ grpc_exec_ctx_finish(&exec_ctx);
+ GPR_ASSERT(CloseHandle(g_iocp));
}
void grpc_iocp_add_socket(grpc_winsocket *socket) {
diff --git a/src/core/iomgr/iocp_windows.h b/src/core/iomgr/iocp_windows.h
index b0209e04e3..75f3ba8477 100644
--- a/src/core/iomgr/iocp_windows.h
+++ b/src/core/iomgr/iocp_windows.h
@@ -38,8 +38,10 @@
#include "src/core/iomgr/socket_windows.h"
+void grpc_iocp_work(grpc_exec_ctx *exec_ctx, gpr_timespec deadline);
void grpc_iocp_init(void);
void grpc_iocp_kick(void);
+void grpc_iocp_flush(void);
void grpc_iocp_shutdown(void);
void grpc_iocp_add_socket(grpc_winsocket *);
diff --git a/src/core/iomgr/iomgr.c b/src/core/iomgr/iomgr.c
index 612419b70e..a10399311f 100644
--- a/src/core/iomgr/iomgr.c
+++ b/src/core/iomgr/iomgr.c
@@ -66,6 +66,7 @@ void grpc_iomgr_init(void) {
g_root_object.next = g_root_object.prev = &g_root_object;
g_root_object.name = "root";
grpc_iomgr_platform_init();
+ grpc_pollset_global_init();
}
static size_t count_objects(void) {
@@ -90,6 +91,8 @@ void grpc_iomgr_shutdown(void) {
gpr_timespec last_warning_time = gpr_now(GPR_CLOCK_REALTIME);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+ grpc_iomgr_platform_flush();
+
gpr_mu_lock(&g_mu);
g_shutdown = 1;
while (g_root_object.next != &g_root_object) {
@@ -135,6 +138,7 @@ void grpc_iomgr_shutdown(void) {
gpr_mu_lock(&g_mu);
gpr_mu_unlock(&g_mu);
+ grpc_pollset_global_shutdown();
grpc_iomgr_platform_shutdown();
gpr_mu_destroy(&g_mu);
gpr_cv_destroy(&g_rcv);
diff --git a/src/core/iomgr/iomgr_internal.h b/src/core/iomgr/iomgr_internal.h
index f266732c96..e372c18e8a 100644
--- a/src/core/iomgr/iomgr_internal.h
+++ b/src/core/iomgr/iomgr_internal.h
@@ -43,10 +43,16 @@ typedef struct grpc_iomgr_object {
struct grpc_iomgr_object *prev;
} grpc_iomgr_object;
+void grpc_pollset_global_init(void);
+void grpc_pollset_global_shutdown(void);
+
void grpc_iomgr_register_object(grpc_iomgr_object *obj, const char *name);
void grpc_iomgr_unregister_object(grpc_iomgr_object *obj);
void grpc_iomgr_platform_init(void);
+/** flush any globally queued work from iomgr */
+void grpc_iomgr_platform_flush(void);
+/** tear down all platform specific global iomgr structures */
void grpc_iomgr_platform_shutdown(void);
#endif /* GRPC_INTERNAL_CORE_IOMGR_IOMGR_INTERNAL_H */
diff --git a/src/core/iomgr/iomgr_posix.c b/src/core/iomgr/iomgr_posix.c
index 2425e59941..f6474b7e6d 100644
--- a/src/core/iomgr/iomgr_posix.c
+++ b/src/core/iomgr/iomgr_posix.c
@@ -42,12 +42,13 @@
void grpc_iomgr_platform_init(void) {
grpc_fd_global_init();
- grpc_pollset_global_init();
grpc_register_tracer("tcp", &grpc_tcp_trace);
}
+void grpc_iomgr_platform_flush(void) {
+}
+
void grpc_iomgr_platform_shutdown(void) {
- grpc_pollset_global_shutdown();
grpc_fd_global_shutdown();
}
diff --git a/src/core/iomgr/iomgr_posix.h b/src/core/iomgr/iomgr_posix.h
index 716fedb636..068a5c6d7c 100644
--- a/src/core/iomgr/iomgr_posix.h
+++ b/src/core/iomgr/iomgr_posix.h
@@ -36,7 +36,4 @@
#include "src/core/iomgr/iomgr_internal.h"
-void grpc_pollset_global_init(void);
-void grpc_pollset_global_shutdown(void);
-
#endif /* GRPC_INTERNAL_CORE_IOMGR_IOMGR_POSIX_H */
diff --git a/src/core/iomgr/iomgr_windows.c b/src/core/iomgr/iomgr_windows.c
index b49cb87e97..93bdc5ec16 100644
--- a/src/core/iomgr/iomgr_windows.c
+++ b/src/core/iomgr/iomgr_windows.c
@@ -63,6 +63,10 @@ void grpc_iomgr_platform_init(void) {
grpc_iocp_init();
}
+void grpc_iomgr_platform_flush(void) {
+ grpc_iocp_flush();
+}
+
void grpc_iomgr_platform_shutdown(void) {
grpc_iocp_shutdown();
winsock_shutdown();
diff --git a/src/core/iomgr/pollset_windows.c b/src/core/iomgr/pollset_windows.c
index 6182eb3532..798b637635 100644
--- a/src/core/iomgr/pollset_windows.c
+++ b/src/core/iomgr/pollset_windows.c
@@ -39,38 +39,66 @@
#include "src/core/iomgr/alarm_internal.h"
#include "src/core/iomgr/iomgr_internal.h"
+#include "src/core/iomgr/iocp_windows.h"
#include "src/core/iomgr/pollset.h"
#include "src/core/iomgr/pollset_windows.h"
-static void remove_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
- worker->prev->next = worker->next;
- worker->next->prev = worker->prev;
+gpr_mu grpc_polling_mu;
+static grpc_pollset_worker *g_active_poller;
+static grpc_pollset_worker g_global_root_worker;
+
+void grpc_pollset_global_init() {
+ gpr_mu_init(&grpc_polling_mu);
+ g_active_poller = NULL;
+ g_global_root_worker.links[GRPC_POLLSET_WORKER_LINK_GLOBAL].next =
+ g_global_root_worker.links[GRPC_POLLSET_WORKER_LINK_GLOBAL].prev =
+ &g_global_root_worker;
+}
+
+void grpc_pollset_global_shutdown() {
+ gpr_mu_destroy(&grpc_polling_mu);
+}
+
+static void remove_worker(grpc_pollset_worker *worker,
+ grpc_pollset_worker_link_type type) {
+ worker->links[type].prev->links[type].next = worker->links[type].next;
+ worker->links[type].next->links[type].prev = worker->links[type].prev;
+ worker->links[type].next = worker->links[type].prev = worker;
}
-static int has_workers(grpc_pollset *p) {
- return p->root_worker.next != &p->root_worker;
+static int has_workers(grpc_pollset_worker *root, grpc_pollset_worker_link_type type) {
+ return root->links[type].next != root;
}
-static grpc_pollset_worker *pop_front_worker(grpc_pollset *p) {
- if (has_workers(p)) {
- grpc_pollset_worker *w = p->root_worker.next;
- remove_worker(p, w);
+static grpc_pollset_worker *pop_front_worker(
+ grpc_pollset_worker *root, grpc_pollset_worker_link_type type) {
+ if (has_workers(root, type)) {
+ grpc_pollset_worker *w = root->links[type].next;
+ remove_worker(w, type);
return w;
} else {
return NULL;
}
}
-static void push_back_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
- worker->next = &p->root_worker;
- worker->prev = worker->next->prev;
- worker->prev->next = worker->next->prev = worker;
+static void push_back_worker(grpc_pollset_worker *root,
+ grpc_pollset_worker_link_type type,
+ grpc_pollset_worker *worker) {
+ worker->links[type].next = root;
+ worker->links[type].prev = worker->links[type].next->links[type].prev;
+ worker->links[type].prev->links[type].next =
+ worker->links[type].next->links[type].prev =
+ worker;
}
-static void push_front_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
- worker->prev = &p->root_worker;
- worker->next = worker->prev->next;
- worker->prev->next = worker->next->prev = worker;
+static void push_front_worker(grpc_pollset_worker *root,
+ grpc_pollset_worker_link_type type,
+ grpc_pollset_worker *worker) {
+ worker->links[type].prev = root;
+ worker->links[type].next = worker->links[type].prev->links[type].next;
+ worker->links[type].prev->links[type].next =
+ worker->links[type].next->links[type].prev =
+ worker;
}
/* There isn't really any such thing as a pollset under Windows, due to the
@@ -80,69 +108,122 @@ static void push_front_worker(grpc_pollset *p, grpc_pollset_worker *worker) {
void grpc_pollset_init(grpc_pollset *pollset) {
memset(pollset, 0, sizeof(*pollset));
- gpr_mu_init(&pollset->mu);
- pollset->root_worker.next = pollset->root_worker.prev = &pollset->root_worker;
- pollset->kicked_without_pollers = 0;
+ pollset->root_worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].next =
+ pollset->root_worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].prev =
+ &pollset->root_worker;
}
void grpc_pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
grpc_closure *closure) {
- gpr_mu_lock(&pollset->mu);
+ gpr_mu_lock(&grpc_polling_mu);
pollset->shutting_down = 1;
grpc_pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST);
- gpr_mu_unlock(&pollset->mu);
- grpc_exec_ctx_enqueue(exec_ctx, closure, 1);
+ if (!pollset->is_iocp_worker) {
+ grpc_exec_ctx_enqueue(exec_ctx, closure, 1);
+ } else {
+ pollset->on_shutdown = closure;
+ }
+ gpr_mu_unlock(&grpc_polling_mu);
}
void grpc_pollset_destroy(grpc_pollset *pollset) {
- gpr_mu_destroy(&pollset->mu);
}
void grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
grpc_pollset_worker *worker, gpr_timespec now,
gpr_timespec deadline) {
int added_worker = 0;
- worker->next = worker->prev = NULL;
+ worker->links[GRPC_POLLSET_WORKER_LINK_POLLSET].next =
+ worker->links[GRPC_POLLSET_WORKER_LINK_POLLSET].prev =
+ worker->links[GRPC_POLLSET_WORKER_LINK_GLOBAL].next =
+ worker->links[GRPC_POLLSET_WORKER_LINK_GLOBAL].prev =
+ NULL;
+ worker->kicked = 0;
+ worker->pollset = pollset;
gpr_cv_init(&worker->cv);
if (grpc_alarm_check(exec_ctx, now, &deadline)) {
goto done;
}
if (!pollset->kicked_without_pollers && !pollset->shutting_down) {
- push_front_worker(pollset, worker);
+ if (g_active_poller == NULL) {
+ grpc_pollset_worker *next_worker;
+ /* become poller */
+ pollset->is_iocp_worker = 1;
+ g_active_poller = worker;
+ gpr_mu_unlock(&grpc_polling_mu);
+ grpc_iocp_work(exec_ctx, deadline);
+ grpc_exec_ctx_flush(exec_ctx);
+ gpr_mu_lock(&grpc_polling_mu);
+ pollset->is_iocp_worker = 0;
+ g_active_poller = NULL;
+ /* try to get a worker from this pollsets worker list */
+ next_worker = pop_front_worker(&pollset->root_worker, GRPC_POLLSET_WORKER_LINK_POLLSET);
+ /* try to get a worker from the global list */
+ next_worker = pop_front_worker(&g_global_root_worker, GRPC_POLLSET_WORKER_LINK_GLOBAL);
+ if (next_worker != NULL) {
+ next_worker->kicked = 1;
+ gpr_cv_signal(&next_worker->cv);
+ }
+
+ if (pollset->shutting_down && pollset->on_shutdown != NULL) {
+ grpc_exec_ctx_enqueue(exec_ctx, pollset->on_shutdown, 1);
+ pollset->on_shutdown = NULL;
+ }
+ goto done;
+ }
+ push_front_worker(&g_global_root_worker, GRPC_POLLSET_WORKER_LINK_GLOBAL, worker);
+ push_front_worker(&pollset->root_worker, GRPC_POLLSET_WORKER_LINK_POLLSET, worker);
added_worker = 1;
- gpr_cv_wait(&worker->cv, &pollset->mu, deadline);
+ while (!worker->kicked) {
+ if (gpr_cv_wait(&worker->cv, &grpc_polling_mu, deadline)) {
+ break;
+ }
+ }
} else {
pollset->kicked_without_pollers = 0;
}
done:
if (!grpc_closure_list_empty(exec_ctx->closure_list)) {
- gpr_mu_unlock(&pollset->mu);
+ gpr_mu_unlock(&grpc_polling_mu);
grpc_exec_ctx_flush(exec_ctx);
- gpr_mu_lock(&pollset->mu);
+ gpr_mu_lock(&grpc_polling_mu);
}
- gpr_cv_destroy(&worker->cv);
if (added_worker) {
- remove_worker(pollset, worker);
+ remove_worker(worker, GRPC_POLLSET_WORKER_LINK_GLOBAL);
+ remove_worker(worker, GRPC_POLLSET_WORKER_LINK_POLLSET);
}
+ gpr_cv_destroy(&worker->cv);
}
void grpc_pollset_kick(grpc_pollset *p, grpc_pollset_worker *specific_worker) {
if (specific_worker != NULL) {
if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) {
- for (specific_worker = p->root_worker.next;
+ for (specific_worker = p->root_worker.links[GRPC_POLLSET_WORKER_LINK_POLLSET].next;
specific_worker != &p->root_worker;
- specific_worker = specific_worker->next) {
+ specific_worker = specific_worker->links[GRPC_POLLSET_WORKER_LINK_POLLSET].next) {
+ specific_worker->kicked = 1;
gpr_cv_signal(&specific_worker->cv);
}
p->kicked_without_pollers = 1;
+ if (p->is_iocp_worker) {
+ grpc_iocp_kick();
+ }
} else {
- gpr_cv_signal(&specific_worker->cv);
+ if (p->is_iocp_worker) {
+ if (g_active_poller == specific_worker) {
+ grpc_iocp_kick();
+ }
+ } else {
+ specific_worker->kicked = 1;
+ gpr_cv_signal(&specific_worker->cv);
+ }
}
} else {
- specific_worker = pop_front_worker(p);
+ specific_worker = pop_front_worker(&p->root_worker, GRPC_POLLSET_WORKER_LINK_POLLSET);
if (specific_worker != NULL) {
- push_back_worker(p, specific_worker);
- gpr_cv_signal(&specific_worker->cv);
+ grpc_pollset_kick(p, specific_worker);
+ } else if (p->is_iocp_worker) {
+ grpc_iocp_kick();
} else {
p->kicked_without_pollers = 1;
}
diff --git a/src/core/iomgr/pollset_windows.h b/src/core/iomgr/pollset_windows.h
index 4efa5a1717..65ba80619b 100644
--- a/src/core/iomgr/pollset_windows.h
+++ b/src/core/iomgr/pollset_windows.h
@@ -43,19 +43,37 @@
used to synchronize with the IOCP, and workers are condition variables
used to block threads until work is ready. */
-typedef struct grpc_pollset_worker {
- gpr_cv cv;
+typedef enum {
+ GRPC_POLLSET_WORKER_LINK_POLLSET = 0,
+ GRPC_POLLSET_WORKER_LINK_GLOBAL,
+ GRPC_POLLSET_WORKER_LINK_TYPES
+} grpc_pollset_worker_link_type;
+
+typedef struct grpc_pollset_worker_link {
struct grpc_pollset_worker *next;
struct grpc_pollset_worker *prev;
+} grpc_pollset_worker_link;
+
+struct grpc_pollset;
+typedef struct grpc_pollset grpc_pollset;
+
+typedef struct grpc_pollset_worker {
+ gpr_cv cv;
+ int kicked;
+ struct grpc_pollset *pollset;
+ grpc_pollset_worker_link links[GRPC_POLLSET_WORKER_LINK_TYPES];
} grpc_pollset_worker;
-typedef struct grpc_pollset {
- gpr_mu mu;
+struct grpc_pollset {
int shutting_down;
int kicked_without_pollers;
+ int is_iocp_worker;
grpc_pollset_worker root_worker;
-} grpc_pollset;
+ grpc_closure *on_shutdown;
+};
+
+extern gpr_mu grpc_polling_mu;
-#define GRPC_POLLSET_MU(pollset) (&(pollset)->mu)
+#define GRPC_POLLSET_MU(pollset) (&grpc_polling_mu)
#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_WINDOWS_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 10:05:31 +0000