Update to Fast LZMA2 1.0.0

C/fast-lzma2/fl2_pool.h

@@ -0,0 +1,64 @@
+/*
+* Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
+* All rights reserved.
+* Modified for FL2 by Conor McCarthy
+*
+* This source code is licensed under both the BSD-style license (found in the
+* LICENSE file in the root directory of this source tree) and the GPLv2 (found
+* in the COPYING file in the root directory of this source tree).
+* You may select, at your option, one of the above-listed licenses.
+*/
+
+#ifndef FL2POOL_H
+#define FL2POOL_H
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+
+#include <stddef.h>   /* size_t */
+
+typedef struct FL2POOL_ctx_s FL2POOL_ctx;
+
+/*! FL2POOL_create() :
+*  Create a thread pool with at most `numThreads` threads.
+* `numThreads` must be at least 1.
+* @return : FL2POOL_ctx pointer on success, else NULL.
+*/
+FL2POOL_ctx *FL2POOL_create(size_t numThreads);
+
+
+/*! FL2POOL_free() :
+Free a thread pool returned by FL2POOL_create().
+*/
+void FL2POOL_free(FL2POOL_ctx *ctx);
+
+/*! FL2POOL_sizeof() :
+return memory usage of pool returned by FL2POOL_create().
+*/
+size_t FL2POOL_sizeof(FL2POOL_ctx *ctx);
+
+/*! FL2POOL_function :
+The function type that can be added to a thread pool.
+*/
+typedef void(*FL2POOL_function)(void *, ptrdiff_t);
+
+/*! FL2POOL_add() :
+Add the job `function(opaque)` to the thread pool.
+FL2POOL_addRange adds multiple jobs with size_t parameter from first to less than end.
+Possibly blocks until there is room in the queue.
+Note : The function may be executed asynchronously, so `opaque` must live until the function has been completed.
+*/
+void FL2POOL_add(void* ctxVoid, FL2POOL_function function, void *opaque, ptrdiff_t n);
+void FL2POOL_addRange(void *ctx, FL2POOL_function function, void *opaque, ptrdiff_t first, ptrdiff_t end);
+
+int FL2POOL_waitAll(void *ctx, unsigned timeout);
+
+size_t FL2POOL_threadsBusy(void *ctx);
+
+#if defined (__cplusplus)
+}
+#endif
+
+#endif