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mono: update to 5.16.0.179.
This commit is contained in:
Helmut Pozimski
parent
0b73a3caab
commit
d94dbb4db9
2 changed files with 203 additions and 7 deletions
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@ -0,0 +1,196 @@
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Source: Hoshpak
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Upstream: https://github.com/mono/mono/issues/7167
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Reason: reverts replacing condition variables with a semaphore in the threading code
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which caused a severe regression that introduced a 5-60 second hang while compiling code
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From ecd1658935128e700962ff440dd460c31403bec7 Mon Sep 17 00:00:00 2001
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From: Helmut Pozimski <helmut@pozimski.eu>
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Date: Tue, 9 Oct 2018 12:46:03 +0200
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Subject: [PATCH] Revert "[threadpool] Replace parked_threads condition
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variable by a semaphore (#6222)"
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This reverts commit 5f5c5e97a08f7086d7c18af37352c4a03dc4c0d1.
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---
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mono/metadata/threadpool-worker-default.c | 99 ++++++++++++-----------
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1 file changed, 52 insertions(+), 47 deletions(-)
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diff --git a/mono/metadata/threadpool-worker-default.c b/mono/metadata/threadpool-worker-default.c
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index 33870a6de15..c5e8529a67f 100644
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--- mono/metadata/threadpool-worker-default.c
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+++ mono/metadata/threadpool-worker-default.c
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@@ -131,8 +131,9 @@ typedef struct {
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ThreadPoolWorkerCounter counters;
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- MonoCoopSem parked_threads_sem;
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+ MonoCoopMutex parked_threads_lock;
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gint32 parked_threads_count;
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+ MonoCoopCond parked_threads_cond;
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volatile gint32 work_items_count;
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@@ -215,7 +216,8 @@ rand_next (gpointer *handle, guint32 min, guint32 max)
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static void
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destroy (gpointer data)
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{
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- mono_coop_sem_destroy (&worker.parked_threads_sem);
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+ mono_coop_mutex_destroy (&worker.parked_threads_lock);
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+ mono_coop_cond_destroy (&worker.parked_threads_cond);
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mono_coop_mutex_destroy (&worker.worker_creation_lock);
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@@ -236,8 +238,9 @@ mono_threadpool_worker_init (MonoThreadPoolWorkerCallback callback)
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worker.callback = callback;
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- mono_coop_sem_init (&worker.parked_threads_sem, 0);
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+ mono_coop_mutex_init (&worker.parked_threads_lock);
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worker.parked_threads_count = 0;
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+ mono_coop_cond_init (&worker.parked_threads_cond);
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worker.worker_creation_current_second = -1;
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mono_coop_mutex_init (&worker.worker_creation_lock);
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@@ -356,60 +359,69 @@ mono_threadpool_worker_request (void)
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mono_refcount_dec (&worker);
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}
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+static void
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+worker_wait_interrupt (gpointer unused)
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+{
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+ /* If the runtime is not shutting down, we are not using this mechanism to wake up a unparked thread, and if the
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+ * runtime is shutting down, then we need to wake up ALL the threads.
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+ * It might be a bit wasteful, but I witnessed shutdown hang where the main thread would abort and then wait for all
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+ * background threads to exit (see mono_thread_manage). This would go wrong because not all threadpool threads would
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+ * be unparked. It would end up getting unstucked because of the timeout, but that would delay shutdown by 5-60s. */
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+ if (!mono_runtime_is_shutting_down ())
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+ return;
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+
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+ if (!mono_refcount_tryinc (&worker))
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+ return;
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+
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+ mono_coop_mutex_lock (&worker.parked_threads_lock);
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+ mono_coop_cond_broadcast (&worker.parked_threads_cond);
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+ mono_coop_mutex_unlock (&worker.parked_threads_lock);
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+
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+ mono_refcount_dec (&worker);
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+}
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+
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/* return TRUE if timeout, FALSE otherwise (worker unpark or interrupt) */
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static gboolean
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worker_park (void)
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{
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gboolean timeout = FALSE;
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gboolean interrupted = FALSE;
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- gint32 old, new;
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mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_THREADPOOL, "[%p] worker parking",
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GUINT_TO_POINTER (MONO_NATIVE_THREAD_ID_TO_UINT (mono_native_thread_id_get ())));
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+ mono_coop_mutex_lock (&worker.parked_threads_lock);
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+
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if (!mono_runtime_is_shutting_down ()) {
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static gpointer rand_handle = NULL;
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+ MonoInternalThread *thread;
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ThreadPoolWorkerCounter counter;
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- if (!rand_handle) {
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+ if (!rand_handle)
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rand_handle = rand_create ();
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- g_assert (rand_handle);
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- }
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+ g_assert (rand_handle);
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+
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+ thread = mono_thread_internal_current ();
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+ g_assert (thread);
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COUNTER_ATOMIC (counter, {
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counter._.working --;
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counter._.parked ++;
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});
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- do {
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- old = mono_atomic_load_i32 (&worker.parked_threads_count);
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- g_assert (old >= G_MININT32);
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+ worker.parked_threads_count += 1;
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- new = old + 1;
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- } while (mono_atomic_cas_i32 (&worker.parked_threads_count, new, old) != old);
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+ mono_thread_info_install_interrupt (worker_wait_interrupt, NULL, &interrupted);
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+ if (interrupted)
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+ goto done;
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- switch (mono_coop_sem_timedwait (&worker.parked_threads_sem, rand_next (&rand_handle, 5 * 1000, 60 * 1000), MONO_SEM_FLAGS_ALERTABLE)) {
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- case MONO_SEM_TIMEDWAIT_RET_SUCCESS:
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- break;
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- case MONO_SEM_TIMEDWAIT_RET_ALERTED:
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- interrupted = TRUE;
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- break;
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- case MONO_SEM_TIMEDWAIT_RET_TIMEDOUT:
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+ if (mono_coop_cond_timedwait (&worker.parked_threads_cond, &worker.parked_threads_lock, rand_next (&rand_handle, 5 * 1000, 60 * 1000)) != 0)
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timeout = TRUE;
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- break;
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- default:
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- g_assert_not_reached ();
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- }
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- if (interrupted || timeout) {
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- /* If the semaphore was posted, then worker.parked_threads_count was decremented in worker_try_unpark */
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- do {
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- old = mono_atomic_load_i32 (&worker.parked_threads_count);
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- g_assert (old > G_MININT32);
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+ mono_thread_info_uninstall_interrupt (&interrupted);
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- new = old - 1;
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- } while (mono_atomic_cas_i32 (&worker.parked_threads_count, new, old) != old);
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- }
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+done:
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+ worker.parked_threads_count -= 1;
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COUNTER_ATOMIC (counter, {
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counter._.working ++;
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@@ -417,6 +429,8 @@ worker_park (void)
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});
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}
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+ mono_coop_mutex_unlock (&worker.parked_threads_lock);
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+
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mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_THREADPOOL, "[%p] worker unparking, timeout? %s interrupted? %s",
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GUINT_TO_POINTER (MONO_NATIVE_THREAD_ID_TO_UINT (mono_native_thread_id_get ())), timeout ? "yes" : "no", interrupted ? "yes" : "no");
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@@ -426,26 +440,17 @@ worker_park (void)
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static gboolean
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worker_try_unpark (void)
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{
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- gboolean res = TRUE;
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- gint32 old, new;
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+ gboolean res = FALSE;
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mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_THREADPOOL, "[%p] try unpark worker",
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GUINT_TO_POINTER (MONO_NATIVE_THREAD_ID_TO_UINT (mono_native_thread_id_get ())));
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- do {
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- old = mono_atomic_load_i32 (&worker.parked_threads_count);
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- g_assert (old > G_MININT32);
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-
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- if (old <= 0) {
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- res = FALSE;
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- break;
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- }
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-
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- new = old - 1;
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- } while (mono_atomic_cas_i32 (&worker.parked_threads_count, new, old) != old);
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-
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- if (res)
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- mono_coop_sem_post (&worker.parked_threads_sem);
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+ mono_coop_mutex_lock (&worker.parked_threads_lock);
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+ if (worker.parked_threads_count > 0) {
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+ mono_coop_cond_signal (&worker.parked_threads_cond);
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+ res = TRUE;
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+ }
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+ mono_coop_mutex_unlock (&worker.parked_threads_lock);
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mono_trace (G_LOG_LEVEL_DEBUG, MONO_TRACE_THREADPOOL, "[%p] try unpark worker, success? %s",
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GUINT_TO_POINTER (MONO_NATIVE_THREAD_ID_TO_UINT (mono_native_thread_id_get ())), res ? "yes" : "no");
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--
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2.19.1
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@ -1,13 +1,13 @@
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# Template file for 'mono'
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pkgname=mono
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version=5.10.1.47
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revision=3
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version=5.16.0.179
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revision=1
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wrksrc="mono-${version}"
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lib32disabled=yes
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build_style=gnu-configure
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configure_args="--disable-system-aot"
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# XXX: figure out how to split this up into subpkgs.
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hostmakedepends="automake libtool perl python cmake"
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hostmakedepends="perl python cmake"
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makedepends="zlib-devel libX11-devel libgdiplus-devel"
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depends="ca-certificates python"
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short_desc="Free implementation of the .NET platform including runtime and compiler"
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@ -15,15 +15,15 @@ maintainer="Helmut Pozimski <helmut@pozimski.eu>"
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homepage="http://www.mono-project.com"
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license="MIT, BSD-3-Clause, GPL-2.0-or-later, LGPL-2.0-or-later, MPL-1.1"
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distfiles="http://download.mono-project.com/sources/mono/${pkgname}-${version}.tar.bz2"
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checksum=90c237b5288f95f6fdab4ace1e36ab64a6369e2c9fddd462d604fd788e2545da
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checksum=93839af2ef0b8796935d8c1efd4cc693bc294bb2beb657b9edb6b4764f01e12b
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case "$XBPS_TARGET_MACHINE" in
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*-musl) configure_args+=" --disable-boehm --without-sigaltstack" ;;
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esac
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pre_configure() {
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autoreconf -fi
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}
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if [ "$CROSS_BUILD" ]; then
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configure_args+=" ac_cv_func_shm_open_working_with_mmap=no"
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fi
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post_install() {
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# Avoid conflict with chicken's csc and csi compiler
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