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author | Balaji V. Iyer <balaji.v.iyer@intel.com> | 2013-10-29 18:37:47 +0000 |
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committer | Balaji V. Iyer <bviyer@gcc.gnu.org> | 2013-10-29 11:37:47 -0700 |
commit | 3038054c687e9400976012eea70333db70ad6a7b (patch) | |
tree | 235d812c6202e962d45c0cce844b2afcc5a0596d /libcilkrts/runtime/cilk_fiber-unix.h | |
parent | 939b37da6ded55070bd78fc28d3fd2222b4278fa (diff) | |
download | gcc-3038054c687e9400976012eea70333db70ad6a7b.zip gcc-3038054c687e9400976012eea70333db70ad6a7b.tar.gz gcc-3038054c687e9400976012eea70333db70ad6a7b.tar.bz2 |
Added Cilk runtime library (libcilkrts) into GCC.
From-SVN: r204173
Diffstat (limited to 'libcilkrts/runtime/cilk_fiber-unix.h')
-rw-r--r-- | libcilkrts/runtime/cilk_fiber-unix.h | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/libcilkrts/runtime/cilk_fiber-unix.h b/libcilkrts/runtime/cilk_fiber-unix.h new file mode 100644 index 0000000..9f47d5b --- /dev/null +++ b/libcilkrts/runtime/cilk_fiber-unix.h @@ -0,0 +1,149 @@ +/* cilk_fiber-unix.h -*-C++-*- + * + ************************************************************************* + * + * @copyright + * Copyright (C) 2012-2013, Intel Corporation + * All rights reserved. + * + * @copyright + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * @copyright + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY + * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + **************************************************************************/ + +#ifndef INCLUDED_CILK_FIBER_UNIX_DOT_H +#define INCLUDED_CILK_FIBER_UNIX_DOT_H + +#ifndef __cplusplus +# error cilk_fiber-unix.h is a C++-only header +#endif + +#include "cilk_fiber.h" +#include "jmpbuf.h" + +/** + * @file cilk_fiber-unix.h + * + * @brief Unix-specific implementation for cilk_fiber. + */ + +/** + * @brief Unix-specific fiber class derived from portable fiber class + */ +struct cilk_fiber_sysdep : public cilk_fiber +{ + public: + +#if SUPPORT_GET_CURRENT_FIBER + /** + * @brief Gets the current fiber from TLS. + */ + static cilk_fiber_sysdep* get_current_fiber_sysdep(); +#endif + + /** + * @brief Construct the system-dependent portion of a fiber. + * + * @param stack_size The size of the stack for this fiber. + */ + cilk_fiber_sysdep(std::size_t stack_size); + + /** + * @brief Construct the system-dependent of a fiber created from a + * thread. + */ + cilk_fiber_sysdep(from_thread_t); + + /** + * @brief Destructor + */ + ~cilk_fiber_sysdep(); + + /** + * @brief OS-specific calls to convert this fiber back to thread. + * + * Nothing to do for Linux. + */ + void convert_fiber_back_to_thread(); + + /** + * @brief System-dependent function to suspend self and resume execution of "other". + * + * This fiber is suspended. + * + * @pre @c is_resumable() should be true. + * + * @param other Fiber to resume. + */ + void suspend_self_and_resume_other_sysdep(cilk_fiber_sysdep* other); + + /** + * @brief System-dependent function called to jump to @p other + * fiber. + * + * @pre @c is_resumable() should be false. + * + * @param other Fiber to resume. + */ + NORETURN jump_to_resume_other_sysdep(cilk_fiber_sysdep* other); + + /** + * @brief Runs the start_proc. + * @pre is_resumable() should be false. + * @pre is_allocated_from_thread() should be false. + * @pre m_start_proc must be valid. + */ + NORETURN run(); + + /** + * @brief Returns the base of this fiber's stack. + */ + inline char* get_stack_base_sysdep() { return m_stack_base; } + + private: + char* m_stack_base; ///< The base of this fiber's stack. + char* m_stack; // Stack memory (low address) + __CILK_JUMP_BUFFER m_resume_jmpbuf; // Place to resume fiber + unsigned m_magic; // Magic number for checking + + static int s_page_size; // Page size for + // stacks. + + // Allocate memory for a stack. This method + // initializes m_stack and m_stack_base. + void make_stack(size_t stack_size); + + // Deallocates memory for the stack. + void free_stack(); + + // Common helper method for implementation of resume_other_sysdep + // variants. + inline void resume_other_sysdep(cilk_fiber_sysdep* other); +}; + +#endif // ! defined(INCLUDED_CILK_FIBER_UNIX_DOT_H) |