X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/debd23d022bac4392bf3847e611b81cfd4915ffc..01627ed90962b9953187f81388cd677219f4b1ad:/include/xbt/parmap.h diff --git a/include/xbt/parmap.h b/include/xbt/parmap.h index f661994a00..d8c32f8bda 100644 --- a/include/xbt/parmap.h +++ b/include/xbt/parmap.h @@ -1,42 +1,35 @@ /* A thread pool. */ -/* Copyright (c) 2007, 2009, 2010. The SimGrid Team. +/* Copyright (c) 2007-2018. The SimGrid Team. * All rights reserved. */ /* This program is free software; you can redistribute it and/or modify it * under the terms of the license (GNU LGPL) which comes with this package. */ -#ifndef _XBT_PARMAP_H -#define _XBT_PARMAP_H +#ifndef XBT_PARMAP_H +#define XBT_PARMAP_H -#include "xbt/misc.h" /* SG_BEGIN_DECL */ -#include "xbt/function_types.h" -#include "xbt/dynar.h" - -SG_BEGIN_DECL() - -/** @addtogroup XBT_parmap - * @brief Parallel map. +/** \addtogroup XBT_parmap + * \ingroup XBT_misc + * \brief Parallel map. + * + * A function is applied to all elements of a std::vector in parallel with n worker threads. The worker threads are + * persistent until the destruction of the parmap. + * + * If there are more than n elements in the vector, the worker threads are allowed to fetch themselves remaining work + * with method next() and execute it. * - * A function is applied to all the elements of a dynar in parallel - * using threads. The threads are persistent until the destruction - * of the parmap object. - * @{ + * \{ */ - /** \brief Queue data type (opaque type) */ - -typedef struct s_xbt_parmap *xbt_parmap_t; - -XBT_PUBLIC(xbt_parmap_t) xbt_parmap_new(unsigned int num_workers); - -XBT_PUBLIC(void) xbt_parmap_apply(xbt_parmap_t parmap, - void_f_pvoid_t fun, - xbt_dynar_t data); - -XBT_PUBLIC(void) xbt_parmap_destroy(xbt_parmap_t parmap); -/** @} */ +/** \brief Synchronization mode of the worker threads of a parmap. */ +typedef enum { + XBT_PARMAP_POSIX, /**< use POSIX synchronization primitives */ + XBT_PARMAP_FUTEX, /**< use Linux futex system call */ + XBT_PARMAP_BUSY_WAIT, /**< busy waits (no system calls, maximum CPU usage) */ + XBT_PARMAP_DEFAULT /**< futex if available, posix otherwise */ +} e_xbt_parmap_mode_t; -SG_END_DECL() +/** \} */ #endif