1 files changed, 85 insertions, 0 deletions
diff --git a/storage/tokudb/PerconaFT/util/threadpool.h b/storage/tokudb/PerconaFT/util/threadpool.h
new file mode 100644
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+/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
+#ident "$Id$"
+/*======
+This file is part of PerconaFT.
+
+
+Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.
+
+    PerconaFT is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License, version 2,
+    as published by the Free Software Foundation.
+
+    PerconaFT 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 PerconaFT.  If not, see <http://www.gnu.org/licenses/>.
+
+----------------------------------------
+
+    PerconaFT is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License, version 3,
+    as published by the Free Software Foundation.
+
+    PerconaFT 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with PerconaFT.  If not, see <http://www.gnu.org/licenses/>.
+======= */
+
+#ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."
+
+#pragma once
+
+#include <stdio.h>
+
+// A toku_thread is toku_pthread that can be cached.
+struct toku_thread;
+
+// Run a function f on a thread
+// This function setups up the thread to run function f with argument arg and then wakes up
+// the thread to run it.
+void toku_thread_run(struct toku_thread *thread, void *(*f)(void *arg), void *arg);
+
+// A toku_thread_pool is a pool of toku_threads.  These threads can be allocated from the pool
+// and can run an arbitrary function.
+struct toku_thread_pool;
+
+typedef struct toku_thread_pool *THREADPOOL;
+
+// Create a new threadpool
+// Effects: a new threadpool is allocated and initialized. the number of threads in the threadpool is limited to max_threads.  
+// If max_threads == 0 then there is no limit on the number of threads in the pool.
+// Initially, there are no threads in the pool. Threads are allocated by the _get or _run functions.
+// Returns: if there are no errors, the threadpool is set and zero is returned.  Otherwise, an error number is returned.
+int toku_thread_pool_create(struct toku_thread_pool **threadpoolptr, int max_threads);
+
+// Destroy a threadpool
+// Effects: the calling thread joins with all of the threads in the threadpool.
+// Effects: the threadpool memory is freed.
+// Returns: the threadpool is set to null.
+void toku_thread_pool_destroy(struct toku_thread_pool **threadpoolptr);
+
+// Get the current number of threads in the thread pool
+int toku_thread_pool_get_current_threads(struct toku_thread_pool *pool);
+
+// Get one or more threads from the thread pool
+// dowait indicates whether or not the caller blocks waiting for threads to free up
+// nthreads on input determines the number of threads that are wanted
+// nthreads on output indicates the number of threads that were allocated
+// toku_thread_return on input supplies an array of thread pointers (all NULL).  This function returns the threads
+// that were allocated in the array.
+int toku_thread_pool_get(struct toku_thread_pool *pool, int dowait, int *nthreads, struct toku_thread **toku_thread_return);
+
+// Run a function f on one or more threads allocated from the thread pool
+int toku_thread_pool_run(struct toku_thread_pool *pool, int dowait, int *nthreads, void *(*f)(void *arg), void *arg);
+
+// Print the state of the thread pool
+void toku_thread_pool_print(struct toku_thread_pool *pool, FILE *out);