1 files changed, 285 insertions, 0 deletions
diff --git a/wsrep-lib/src/thread_service_v1.cpp b/wsrep-lib/src/thread_service_v1.cpp
new file mode 100644
index 00000000..ee81ba31
--- /dev/null
+++ b/wsrep-lib/src/thread_service_v1.cpp
@@ -0,0 +1,285 @@
+/*
+ * Copyright (C) 2019-2020 Codership Oy <info@codership.com>
+ *
+ * This file is part of wsrep-lib.
+ *
+ * Wsrep-lib is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Wsrep-lib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with wsrep-lib.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "thread_service_v1.hpp"
+#include "service_helpers.hpp"
+
+#include "wsrep/thread_service.hpp"
+#include "wsrep/logger.hpp"
+#include "v26/wsrep_thread_service.h"
+
+#include <cassert>
+#include <dlfcn.h>
+#include <cerrno>
+
+namespace wsrep_thread_service_v1
+{
+    //
+    // Thread service callbacks
+    //
+
+    // Pointer to thread service implementation provided by
+    // the application.
+    static wsrep::thread_service* thread_service_impl{ 0 };
+    static std::atomic<size_t> use_count;
+
+    static const wsrep_thread_key_t* thread_key_create_cb(const char* name)
+    {
+        assert(thread_service_impl);
+        return reinterpret_cast<const wsrep_thread_key_t*>(
+            thread_service_impl->create_thread_key(name));
+        ;
+    }
+
+    static int thread_create_cb(const wsrep_thread_key_t* key,
+                                wsrep_thread_t** thread,
+                                void* (*fn)(void*), void* args)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->create_thread(
+            reinterpret_cast<const wsrep::thread_service::thread_key*>(key),
+            reinterpret_cast<wsrep::thread_service::thread**>(thread), fn,
+            args);
+    }
+
+    int thread_detach_cb(wsrep_thread_t* thread)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->detach(
+            reinterpret_cast<wsrep::thread_service::thread*>(thread));
+    }
+
+    int thread_equal_cb(wsrep_thread_t* thread_1, wsrep_thread_t* thread_2)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->equal(
+            reinterpret_cast<wsrep::thread_service::thread*>(thread_1),
+            reinterpret_cast<wsrep::thread_service::thread*>(thread_2));
+    }
+
+    __attribute__((noreturn))
+    void thread_exit_cb(wsrep_thread_t* thread, void* retval)
+    {
+        assert(thread_service_impl);
+        thread_service_impl->exit(
+            reinterpret_cast<wsrep::thread_service::thread*>(thread), retval);
+        throw; // Implementation broke the contract and returned.
+    }
+
+    int thread_join_cb(wsrep_thread_t* thread, void** retval)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->join(
+            reinterpret_cast<wsrep::thread_service::thread*>(thread), retval);
+    }
+
+    wsrep_thread_t* thread_self_cb(void)
+    {
+        assert(thread_service_impl);
+        return reinterpret_cast<wsrep_thread_t*>(thread_service_impl->self());
+    }
+
+    int thread_setschedparam_cb(wsrep_thread_t* thread, int policy,
+                                const struct sched_param* sp)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->setschedparam(
+            reinterpret_cast<wsrep::thread_service::thread*>(thread),
+            policy, sp);
+    }
+
+    int thread_getschedparam_cb(wsrep_thread_t* thread, int* policy,
+                                struct sched_param* sp)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->getschedparam(
+            reinterpret_cast<wsrep::thread_service::thread*>(thread), policy,
+            sp);
+    }
+
+    const wsrep_mutex_key_t* mutex_key_create_cb(const char* name)
+    {
+        assert(thread_service_impl);
+        return reinterpret_cast<const wsrep_mutex_key_t*>(
+            thread_service_impl->create_mutex_key(name));
+    }
+
+    wsrep_mutex_t* mutex_init_cb(const wsrep_mutex_key_t* key, void* memblock,
+                                 size_t memblock_size)
+    {
+        assert(thread_service_impl);
+        return reinterpret_cast<wsrep_mutex_t*>(
+            thread_service_impl->init_mutex(
+                reinterpret_cast<const wsrep::thread_service::mutex_key*>(key),
+                memblock, memblock_size));
+    }
+
+    int mutex_destroy_cb(wsrep_mutex_t* mutex)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->destroy(
+            reinterpret_cast<wsrep::thread_service::mutex*>(mutex));
+    }
+    int mutex_lock_cb(wsrep_mutex_t* mutex)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->lock(
+            reinterpret_cast<wsrep::thread_service::mutex*>(mutex));
+    }
+
+    int mutex_trylock_cb(wsrep_mutex_t* mutex)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->trylock(
+            reinterpret_cast<wsrep::thread_service::mutex*>(mutex));
+    }
+
+    int mutex_unlock_cb(wsrep_mutex_t* mutex)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->unlock(
+            reinterpret_cast<wsrep::thread_service::mutex*>(mutex));
+    }
+
+    const wsrep_cond_key_t* cond_key_create_cb(const char* name)
+    {
+        assert(thread_service_impl);
+        return reinterpret_cast<const wsrep_cond_key_t*>(
+            thread_service_impl->create_cond_key(name));
+    }
+
+    wsrep_cond_t* cond_init_cb(const wsrep_cond_key_t* key, void* memblock,
+                               size_t memblock_size)
+    {
+        assert(thread_service_impl);
+        return reinterpret_cast<wsrep_cond_t*>(thread_service_impl->init_cond(
+            reinterpret_cast<const wsrep::thread_service::cond_key*>(key),
+            memblock, memblock_size));
+    }
+
+    int cond_destroy_cb(wsrep_cond_t* cond)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->destroy(
+            reinterpret_cast<wsrep::thread_service::cond*>(cond));
+    }
+
+    int cond_wait_cb(wsrep_cond_t* cond, wsrep_mutex_t* mutex)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->wait(
+            reinterpret_cast<wsrep::thread_service::cond*>(cond),
+            reinterpret_cast<wsrep::thread_service::mutex*>(mutex));
+    }
+
+    int cond_timedwait_cb(wsrep_cond_t* cond, wsrep_mutex_t* mutex,
+                          const struct timespec* ts)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->timedwait(
+            reinterpret_cast<wsrep::thread_service::cond*>(cond),
+            reinterpret_cast<wsrep::thread_service::mutex*>(mutex), ts);
+    }
+
+    int cond_signal_cb(wsrep_cond_t* cond)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->signal(
+            reinterpret_cast<wsrep::thread_service::cond*>(cond));
+    }
+
+    int cond_broadcast_cb(wsrep_cond_t* cond)
+    {
+        assert(thread_service_impl);
+        return thread_service_impl->broadcast(
+            reinterpret_cast<wsrep::thread_service::cond*>(cond));
+    }
+
+    static wsrep_thread_service_v1_t thread_service_callbacks
+        = { thread_key_create_cb,
+            thread_create_cb,
+            thread_detach_cb,
+            thread_equal_cb,
+            thread_exit_cb,
+            thread_join_cb,
+            thread_self_cb,
+            thread_setschedparam_cb,
+            thread_getschedparam_cb,
+            mutex_key_create_cb,
+            mutex_init_cb,
+            mutex_destroy_cb,
+            mutex_lock_cb,
+            mutex_trylock_cb,
+            mutex_unlock_cb,
+            cond_key_create_cb,
+            cond_init_cb,
+            cond_destroy_cb,
+            cond_wait_cb,
+            cond_timedwait_cb,
+            cond_signal_cb,
+            cond_broadcast_cb };
+}
+
+int wsrep::thread_service_v1_probe(void* dlh)
+{
+    typedef int (*init_fn)(wsrep_thread_service_v1_t*);
+    typedef void (*deinit_fn)();
+    if (wsrep_impl::service_probe<init_fn>(
+            dlh, WSREP_THREAD_SERVICE_INIT_FUNC_V1, "thread service v1") ||
+        wsrep_impl::service_probe<deinit_fn>(
+            dlh, WSREP_THREAD_SERVICE_DEINIT_FUNC_V1, "thread service v1"))
+    {
+        wsrep::log_warning() << "Provider does not support thread service v1";
+        return 1;
+    }
+    return 0;
+}
+
+int wsrep::thread_service_v1_init(void* dlh,
+                                  wsrep::thread_service* thread_service)
+{
+    if (not (dlh && thread_service)) return EINVAL;
+    typedef int (*init_fn)(wsrep_thread_service_v1_t*);
+    wsrep_thread_service_v1::thread_service_impl = thread_service;
+    int ret(0);
+    if ((ret = wsrep_impl::service_init<init_fn>(
+             dlh, WSREP_THREAD_SERVICE_INIT_FUNC_V1,
+             &wsrep_thread_service_v1::thread_service_callbacks,
+             "thread service v1")))
+    {
+        wsrep_thread_service_v1::thread_service_impl = 0;
+    }
+    else
+    {
+        ++wsrep_thread_service_v1::use_count;
+    }
+    return ret;
+}
+
+void wsrep::thread_service_v1_deinit(void* dlh)
+{
+    typedef int (*deinit_fn)();
+    wsrep_impl::service_deinit<deinit_fn>(
+        dlh, WSREP_THREAD_SERVICE_DEINIT_FUNC_V1, "thread service v1");
+    --wsrep_thread_service_v1::use_count;
+    if (wsrep_thread_service_v1::use_count == 0)
+    {
+        wsrep_thread_service_v1::thread_service_impl = 0;
+    }
+}