* under the terms of the license (GNU LGPL) which comes with this package. */
#include <stdarg.h>
+
#include "smx_context_sysv_private.h"
#include "xbt/parmap.h"
#include "simix/private.h"
+#include "gras_config.h"
#ifdef HAVE_VALGRIND_VALGRIND_H
# include <valgrind/valgrind.h>
static void smx_ctx_sysv_wrapper(int count, ...);
+/* This is a bit paranoid about SIZEOF_VOIDP not being a multiple of SIZEOF_INT,
+ * but it doesn't harm. */
+#define CTX_ADDR_LEN (SIZEOF_VOIDP / SIZEOF_INT + !!(SIZEOF_VOIDP % SIZEOF_INT))
+union u_ctx_addr {
+ void *addr;
+ int intv[CTX_ADDR_LEN];
+};
+#if (CTX_ADDR_LEN == 1)
+# define CTX_ADDR_SPLIT(u) (u).intv[0]
+#elif (CTX_ADDR_LEN == 2)
+# define CTX_ADDR_SPLIT(u) (u).intv[0], (u).intv[1]
+#else
+# error Your architecture is not supported yet
+#endif
+
void SIMIX_ctx_sysv_factory_init(smx_context_factory_t *factory)
{
smx_ctx_base_factory_init(factory);
void_pfn_smxprocess_t cleanup_func,
void *data)
{
- uintptr_t ctx_addr;
+ union u_ctx_addr ctx_addr;
smx_ctx_sysv_t context =
(smx_ctx_sysv_t) smx_ctx_base_factory_create_context_sized(size,
code,
((char *) context->uc.uc_stack.ss_sp) +
context->uc.uc_stack.ss_size);
#endif /* HAVE_VALGRIND_VALGRIND_H */
- ctx_addr = (uintptr_t)context;
- /* This switch select a case base on a static value: the compiler optimizes it out */
- /* It could be replaced by a set of #ifdef/#else/#endif blocks */
- switch(sizeof(uintptr_t) / sizeof(int)) {
- case 1:
- makecontext(&((smx_ctx_sysv_t) context)->uc, (void (*)())smx_ctx_sysv_wrapper,
- 2, 1, (int)ctx_addr);
- break;
- case 2:
- makecontext(&((smx_ctx_sysv_t) context)->uc, (void (*)())smx_ctx_sysv_wrapper,
- 3, 2, (int)(ctx_addr >> (8 * sizeof(int))), (int)(ctx_addr));
- break;
- default:
- THROW_IMPOSSIBLE;
- }
+ ctx_addr.addr = context;
+ makecontext(&context->uc, (void (*)())smx_ctx_sysv_wrapper,
+ CTX_ADDR_LEN, CTX_ADDR_SPLIT(ctx_addr));
}else{
maestro_context = context;
}
smx_ctx_sysv_suspend(context);
}
-void smx_ctx_sysv_wrapper(int count, ...)
+void smx_ctx_sysv_wrapper(int first, ...)
{
- uintptr_t ctx_addr = 0;
- va_list ap;
+ union u_ctx_addr ctx_addr;
smx_ctx_sysv_t context;
- int i;
- va_start(ap, count);
- for(i = 0; i < count; i++) {
- ctx_addr <<= 8*sizeof(int);
- ctx_addr |= (uintptr_t)va_arg(ap, int);
+ ctx_addr.intv[0] = first;
+ if (CTX_ADDR_LEN > 1) {
+ va_list ap;
+ int i;
+ va_start(ap, first);
+ for(i = 1; i < CTX_ADDR_LEN; i++)
+ ctx_addr.intv[i] = va_arg(ap, int);
+ va_end(ap);
}
- va_end(ap);
- context = (smx_ctx_sysv_t)ctx_addr;
+ context = ctx_addr.addr;
(context->super.code) (context->super.argc, context->super.argv);
smx_ctx_sysv_stop((smx_context_t) context);