-/* context_raw - fast context switching inspired from System V ucontextes */
+/* context_raw - fast context switching inspired from System V ucontexts */
-/* Copyright (c) 2009, 2010. The SimGrid Team.
+/* Copyright (c) 2009-2013. 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. */
-#include "simix/private.h"
+#include "smx_private.h"
#include "xbt/parmap.h"
+#include "mc/mc.h"
#ifdef HAVE_VALGRIND_VALGRIND_H
# include <valgrind/valgrind.h>
#ifdef HAVE_VALGRIND_VALGRIND_H
unsigned int valgrind_stack_id; /* the valgrind stack id */
#endif
-#ifdef TIME_BENCH
+#ifdef TIME_BENCH_PER_SR
unsigned int thread; /* Just for measuring purposes */
#endif
} s_smx_ctx_raw_t, *smx_ctx_raw_t;
#ifdef CONTEXT_THREADS
static xbt_parmap_t raw_parmap;
-static raw_stack_t* raw_workers_stacks; /* space to save the worker stack in each thread */
+static smx_ctx_raw_t* raw_workers_context; /* space to save the worker context in each thread */
static unsigned long raw_threads_working; /* number of threads that have started their work */
static xbt_os_thread_key_t raw_worker_id_key; /* thread-specific storage for the thread id */
#endif
rawctx_entry_point_t entry_point, void* arg);
extern void raw_swapcontext(raw_stack_t* old, raw_stack_t new);
-#ifdef PROCESSOR_i686
+#if PROCESSOR_x86_64
+__asm__ (
+#if defined(APPLE)
+ ".text\n"
+ ".globl _raw_makecontext\n"
+ "_raw_makecontext:\n"
+#elif defined(_WIN32)
+ ".text\n"
+ ".globl raw_makecontext\n"
+ "raw_makecontext:\n"
+#else
+ ".text\n"
+ ".globl raw_makecontext\n"
+ ".type raw_makecontext,@function\n"
+ "raw_makecontext:\n"/* Calling convention sets the arguments in rdi, rsi, rdx and rcx, respectively */
+#endif
+ " mov %rdi,%rax\n" /* stack */
+ " add %rsi,%rax\n" /* size */
+ " movq $0, -8(%rax)\n" /* @return for func */
+ " mov %rdx,-16(%rax)\n" /* func */
+ " mov %rcx,-24(%rax)\n" /* arg/rdi */
+ " movq $0, -32(%rax)\n" /* rsi */
+ " movq $0, -40(%rax)\n" /* rdx */
+ " movq $0, -48(%rax)\n" /* rcx */
+ " movq $0, -56(%rax)\n" /* r8 */
+ " movq $0, -64(%rax)\n" /* r9 */
+ " movq $0, -72(%rax)\n" /* rbp */
+ " movq $0, -80(%rax)\n" /* rbx */
+ " movq $0, -88(%rax)\n" /* r12 */
+ " movq $0, -96(%rax)\n" /* r13 */
+ " movq $0, -104(%rax)\n" /* r14 */
+ " movq $0, -112(%rax)\n" /* r15 */
+ " sub $112,%rax\n"
+ " ret\n"
+);
+
+__asm__ (
+#if defined(APPLE)
+ ".text\n"
+ ".globl _raw_swapcontext\n"
+ "_raw_swapcontext:\n"
+#elif defined(_WIN32)
+ ".text\n"
+ ".globl raw_swapcontext\n"
+ "raw_swapcontext:\n"
+#else
+ ".text\n"
+ ".globl raw_swapcontext\n"
+ ".type raw_swapcontext,@function\n"
+ "raw_swapcontext:\n" /* Calling convention sets the arguments in rdi and rsi, respectively */
+#endif
+ " push %rdi\n"
+ " push %rsi\n"
+ " push %rdx\n"
+ " push %rcx\n"
+ " push %r8\n"
+ " push %r9\n"
+ " push %rbp\n"
+ " push %rbx\n"
+ " push %r12\n"
+ " push %r13\n"
+ " push %r14\n"
+ " push %r15\n"
+ " mov %rsp,(%rdi)\n" /* old */
+ " mov %rsi,%rsp\n" /* new */
+ " pop %r15\n"
+ " pop %r14\n"
+ " pop %r13\n"
+ " pop %r12\n"
+ " pop %rbx\n"
+ " pop %rbp\n"
+ " pop %r9\n"
+ " pop %r8\n"
+ " pop %rcx\n"
+ " pop %rdx\n"
+ " pop %rsi\n"
+ " pop %rdi\n"
+ " ret\n"
+);
+#elif PROCESSOR_i686
__asm__ (
#if defined(APPLE) || defined(_WIN32)
".text\n"
" popl %ebp\n"
" retl\n"
);
-#elif PROCESSOR_x86_64
-__asm__ (
-#if defined(APPLE) || defined(_WIN32)
- ".text\n"
- ".globl _raw_makecontext\n"
- "_raw_makecontext:\n"
#else
- ".text\n"
- ".globl raw_makecontext\n"
- ".type raw_makecontext,@function\n"
- "raw_makecontext:\n"/* Calling convention sets the arguments in rdi, rsi, rdx and rcx, respectively */
-#endif
- " movq %rdi,%rax\n" /* stack */
- " addq %rsi,%rax\n" /* size */
- " movq $0, -8(%rax)\n" /* @return for func */
- " movq %rdx,-16(%rax)\n" /* func */
- " movq %rcx,-24(%rax)\n" /* arg/rdi */
- " movq $0, -32(%rax)\n" /* rsi */
- " movq $0, -40(%rax)\n" /* rdx */
- " movq $0, -48(%rax)\n" /* rcx */
- " movq $0, -56(%rax)\n" /* r8 */
- " movq $0, -64(%rax)\n" /* r9 */
- " movq $0, -72(%rax)\n" /* rbp */
- " movq $0, -80(%rax)\n" /* rbx */
- " movq $0, -88(%rax)\n" /* r12 */
- " movq $0, -96(%rax)\n" /* r13 */
- " movq $0, -104(%rax)\n" /* r14 */
- " movq $0, -112(%rax)\n" /* r15 */
- " subq $112,%rax\n"
- " retq\n"
-);
-__asm__ (
-#if defined(APPLE) || defined(_WIN32)
- ".text\n"
- ".globl _raw_swapcontext\n"
- "_raw_swapcontext:\n"
-#else
- ".text\n"
- ".globl raw_swapcontext\n"
- ".type raw_swapcontext,@function\n"
- "raw_swapcontext:\n" /* Calling convention sets the arguments in rdi and rsi, respectively */
-#endif
- " pushq %rdi\n"
- " pushq %rsi\n"
- " pushq %rdx\n"
- " pushq %rcx\n"
- " pushq %r8\n"
- " pushq %r9\n"
- " pushq %rbp\n"
- " pushq %rbx\n"
- " pushq %r12\n"
- " pushq %r13\n"
- " pushq %r14\n"
- " pushq %r15\n"
- " movq %rsp,(%rdi)\n" /* old */
- " movq %rsi,%rsp\n" /* new */
- " popq %r15\n"
- " popq %r14\n"
- " popq %r13\n"
- " popq %r12\n"
- " popq %rbx\n"
- " popq %rbp\n"
- " popq %r9\n"
- " popq %r8\n"
- " popq %rcx\n"
- " popq %rdx\n"
- " popq %rsi\n"
- " popq %rdi\n"
- " retq\n"
-);
-#else
/* If you implement raw contexts for other processors, don't forget to
update the definition of HAVE_RAWCTX in buildtools/Cmake/CompleteInFiles.cmake */
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
-#ifdef TIME_BENCH
+#ifdef TIME_BENCH_PER_SR
#include "xbt/xbt_os_time.h"
#define NUM_THREADS 4
static xbt_os_timer_t timer;
*/
void SIMIX_ctx_raw_factory_init(smx_context_factory_t *factory)
{
+
XBT_VERB("Using raw contexts. Because the glibc is just not good enough for us.");
smx_ctx_base_factory_init(factory);
if (SIMIX_context_is_parallel()) {
#ifdef CONTEXT_THREADS
int nthreads = SIMIX_context_get_nthreads();
- raw_parmap = xbt_parmap_new(nthreads, SIMIX_context_get_parallel_mode());
- raw_workers_stacks = xbt_new(raw_stack_t, nthreads);
xbt_os_thread_key_create(&raw_worker_id_key);
+ raw_parmap = xbt_parmap_new(nthreads, SIMIX_context_get_parallel_mode());
+ raw_workers_context = xbt_new(smx_ctx_raw_t, nthreads);
+ raw_maestro_context=NULL;
+
#endif
if (SIMIX_context_get_parallel_threshold() > 1) {
/* choose dynamically */
(*factory)->runall = smx_ctx_raw_runall_serial;
(*factory)->suspend = smx_ctx_raw_suspend_serial;
}
-#ifdef TIME_BENCH
+#ifdef TIME_BENCH_PER_SR
timer = xbt_os_timer_new();
#endif
}
*/
static int smx_ctx_raw_factory_finalize(smx_context_factory_t *factory)
{
-#ifdef TIME_BENCH
- XBT_CRITICAL("Total wasted time in %u SR: %lf", sr_count, time_wasted_sr);
- XBT_CRITICAL("Total wasted time in %u SSR: %lf", ssr_count, time_wasted_ssr);
+#ifdef TIME_BENCH_PER_SR
+ XBT_CRITICAL("Total wasted time in %u SR: %f", sr_count, time_wasted_sr);
+ XBT_CRITICAL("Total wasted time in %u SSR: %f", ssr_count, time_wasted_ssr);
#endif
#ifdef CONTEXT_THREADS
if (raw_parmap)
xbt_parmap_destroy(raw_parmap);
- xbt_free(raw_workers_stacks);
+ xbt_free(raw_workers_context);
#endif
return smx_ctx_base_factory_finalize(factory);
}
#endif /* HAVE_VALGRIND_VALGRIND_H */
} else {
- raw_maestro_context = context;
+ if(data != NULL && raw_maestro_context==NULL)
+ raw_maestro_context = context;
+
+ if(MC_is_active())
+ MC_ignore_heap(&(raw_maestro_context->stack_top), sizeof(raw_maestro_context->stack_top));
+
}
return (smx_context_t) context;
((smx_ctx_raw_t) context)->stack_top);
}
-#ifdef TIME_BENCH
+#ifdef TIME_BENCH_PER_SR
static void smx_ctx_raw_runall_serial(xbt_dynar_t processes)
{
smx_process_t process;
time_thread_sr[t] = 0;
}
- xbt_os_timer_start(timer);
+ xbt_os_cputimer_start(timer);
smx_ctx_raw_resume(process);
- xbt_os_timer_stop(timer);
+ xbt_os_cputimer_stop(timer);
elapsed = xbt_os_timer_elapsed(timer);
time_thread_ssr[t] += elapsed;
time_thread_sr[((smx_ctx_raw_t)process->context)->thread] += elapsed;
tmax = time_thread_ssr[t];
for(cursor=0; cursor <= t; cursor++){
- XBT_VERB("Time SSR thread %u = %lf (max %lf)", cursor, time_thread_ssr[cursor], tmax);
+ XBT_VERB("Time SSR thread %u = %f (max %f)", cursor, time_thread_ssr[cursor], tmax);
time_wasted_ssr += tmax - time_thread_ssr[cursor];
}
}
}
for(i=0; i < NUM_THREADS; i++){
- XBT_VERB("Time SR thread %u = %lf (max %lf)", i, time_thread_sr[i], tmax);
+ XBT_VERB("Time SR thread %u = %f (max %f)", i, time_thread_sr[i], tmax);
time_wasted_sr += tmax - time_thread_sr[i];
}
*/
static void smx_ctx_raw_runall_serial(void)
{
- if (!xbt_dynar_is_empty(simix_global->process_to_run)) {
- smx_process_t first_process =
- xbt_dynar_get_as(simix_global->process_to_run, 0, smx_process_t);
- raw_process_index = 1;
+ smx_process_t first_process =
+ xbt_dynar_get_as(simix_global->process_to_run, 0, smx_process_t);
+ raw_process_index = 1;
- /* execute the first process */
- smx_ctx_raw_resume_serial(first_process);
- }
+ /* execute the first process */
+ smx_ctx_raw_resume_serial(first_process);
}
#endif
-/**
- * \brief Stops a raw context.
- *
- * This function is called when the main function of the context if finished.
- *
- * \param context the context of the current worker thread
- */
-static void smx_ctx_raw_stop_parallel(smx_context_t context)
-{
- smx_ctx_base_stop(context);
- smx_ctx_raw_suspend_parallel(context);
-}
-
/**
* \brief Suspends a running context and resumes another one or returns to
* the main function of the current worker thread.
else {
/* all processes were run, go to the barrier */
XBT_DEBUG("No more processes to run");
- next_context = (smx_context_t) raw_maestro_context;
+
unsigned long worker_id =
(unsigned long) xbt_os_thread_get_specific(raw_worker_id_key);
+
+ next_context = (smx_context_t)raw_workers_context[worker_id];
XBT_DEBUG("Restoring worker stack %lu (working threads = %lu)",
worker_id, raw_threads_working);
- next_stack = raw_workers_stacks[worker_id];
+ next_stack = ((smx_ctx_raw_t)next_context)->stack_top;
}
SIMIX_context_set_current(next_context);
#ifdef CONTEXT_THREADS
unsigned long worker_id = __sync_fetch_and_add(&raw_threads_working, 1);
xbt_os_thread_set_specific(raw_worker_id_key, (void*) worker_id);
+ smx_ctx_raw_t worker_context = (smx_ctx_raw_t)SIMIX_context_self();
+ raw_workers_context[worker_id] = worker_context;
XBT_DEBUG("Saving worker stack %lu", worker_id);
- raw_stack_t* worker_stack = &raw_workers_stacks[worker_id];
+ raw_stack_t* worker_stack = &(worker_context)->stack_top;
+
smx_context_t context = first_process->context;
SIMIX_context_set_current(context);
raw_threads_working = 0;
xbt_parmap_apply(raw_parmap, (void_f_pvoid_t) smx_ctx_raw_resume_parallel,
simix_global->process_to_run);
+#else
+ xbt_die("You asked for a parallel execution, but you don't have any threads.");
#endif
}
