-/* Copyright (c) 2009-2019. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2009-2023. 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 "ContextRaw.hpp"
-#include "context_private.hpp"
-#include "mc/mc.h"
#include "simgrid/Exception.hpp"
-#include "src/simix/smx_private.hpp"
+#include "src/mc/mc.h"
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(ker_context);
// Raw context routines
-typedef void (*rawctx_entry_point_t)(void *);
+using rawctx_entry_point_t = void (*)(simgrid::kernel::context::SwappedContext*);
-typedef void* raw_stack_t;
-extern "C" raw_stack_t raw_makecontext(void* malloced_stack, int stack_size,
- rawctx_entry_point_t entry_point, void* arg);
+using raw_stack_t = void*;
+extern "C" raw_stack_t raw_makecontext(void* malloced_stack, int stack_size, rawctx_entry_point_t entry_point,
+ simgrid::kernel::context::SwappedContext* arg);
extern "C" void raw_swapcontext(raw_stack_t* old, raw_stack_t new_context);
// TODO, we should handle FP, MMX and the x87 control-word (for x86 and x86_64)
+#if HAVE_RAW_CONTEXTS
+
#if SIMGRID_PROCESSOR_x86_64
-__asm__ (
+__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"
+ ".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 */
+ ".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 */
- " andq $-16, %rax\n" /* align stack */
- " 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__ (
+ " mov %rdi,%rax\n" /* stack */
+ " add %rsi,%rax\n" /* size */
+ " andq $-16, %rax\n" /* align stack */
+ " 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"
+ ".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 */
+ ".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"
-);
+ " 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 SIMGRID_PROCESSOR_i686
-__asm__ (
-#if defined(__APPLE__) || defined(_WIN32)
- ".text\n"
- ".globl _raw_makecontext\n"
- "_raw_makecontext:\n"
+__asm__(
+#if defined(__APPLE__)
+ ".text\n"
+ ".globl _raw_makecontext\n"
+ "_raw_makecontext:\n"
#else
- ".text\n"
- ".globl raw_makecontext\n"
- ".type raw_makecontext,@function\n"
- "raw_makecontext:\n"
+ ".text\n"
+ ".globl raw_makecontext\n"
+ ".type raw_makecontext,@function\n"
+ "raw_makecontext:\n"
#endif
- " movl 4(%esp),%eax\n" /* stack */
- " addl 8(%esp),%eax\n" /* size */
- " andl $-16, %eax\n" /* align stack */
- " movl 12(%esp),%ecx\n" /* func */
- " movl 16(%esp),%edx\n" /* arg */
- " movl %edx, -4(%eax)\n"
- " movl $0, -8(%eax)\n" /* @return for func */
- " movl %ecx,-12(%eax)\n"
- " movl $0, -16(%eax)\n" /* ebp */
- " movl $0, -20(%eax)\n" /* ebx */
- " movl $0, -24(%eax)\n" /* esi */
- " movl $0, -28(%eax)\n" /* edi */
- " subl $28,%eax\n"
- " retl\n"
-);
-
-__asm__ (
-#if defined(__APPLE__) || defined(_WIN32)
- ".text\n"
- ".globl _raw_swapcontext\n"
- "_raw_swapcontext:\n"
+ " movl 4(%esp),%eax\n" /* stack */
+ " addl 8(%esp),%eax\n" /* size */
+ " andl $-16, %eax\n" /* align stack */
+ " movl 12(%esp),%ecx\n" /* func */
+ " movl 16(%esp),%edx\n" /* arg */
+ " movl %edx, -4(%eax)\n"
+ " movl $0, -8(%eax)\n" /* @return for func */
+ " movl %ecx,-12(%eax)\n"
+ " movl $0, -16(%eax)\n" /* ebp */
+ " movl $0, -20(%eax)\n" /* ebx */
+ " movl $0, -24(%eax)\n" /* esi */
+ " movl $0, -28(%eax)\n" /* edi */
+ " subl $28,%eax\n"
+ " retl\n");
+
+__asm__(
+#if defined(__APPLE__)
+ ".text\n"
+ ".globl _raw_swapcontext\n"
+ "_raw_swapcontext:\n"
#else
- ".text\n"
- ".globl raw_swapcontext\n"
- ".type raw_swapcontext,@function\n"
- "raw_swapcontext:\n"
+ ".text\n"
+ ".globl raw_swapcontext\n"
+ ".type raw_swapcontext,@function\n"
+ "raw_swapcontext:\n"
#endif
- // Fetch the parameters:
- " movl 4(%esp),%eax\n" /* old (raw_stack_t*) */
- " movl 8(%esp),%edx\n" /* new (raw_stack_t) */
- // Save registers of the current context on the stack:
- " pushl %ebp\n"
- " pushl %ebx\n"
- " pushl %esi\n"
- " pushl %edi\n"
- // Save the current context (stack pointer) in *old:
- " movl %esp,(%eax)\n"
- // Switch to the stack of the new context:
- " movl %edx,%esp\n"
- // Pop the values of the new context:
- " popl %edi\n"
- " popl %esi\n"
- " popl %ebx\n"
- " popl %ebp\n"
- // Return using the return address of the new context:
- " retl\n"
-);
+ // Fetch the parameters:
+ " movl 4(%esp),%eax\n" /* old (raw_stack_t*) */
+ " movl 8(%esp),%edx\n" /* new (raw_stack_t) */
+ // Save registers of the current context on the stack:
+ " pushl %ebp\n"
+ " pushl %ebx\n"
+ " pushl %esi\n"
+ " pushl %edi\n"
+ // Save the current context (stack pointer) in *old:
+ " movl %esp,(%eax)\n"
+ // Switch to the stack of the new context:
+ " movl %edx,%esp\n"
+ // Pop the values of the new context:
+ " popl %edi\n"
+ " popl %esi\n"
+ " popl %ebx\n"
+ " popl %ebp\n"
+ // Return using the return address of the new context:
+ " retl\n");
#else
+#error HAVE_RAW_CONTEXTS defined, but neither SIMGRID_PROCESSOR_x86_64 nor SIMGRID_PROCESSOR_i686. Please update the code.
+#endif
+#else /* not HAVE_RAW_CONTEXTS */
/* If you implement raw contexts for other processors, don't forget to
update the definition of HAVE_RAW_CONTEXTS in tools/cmake/CompleteInFiles.cmake */
-raw_stack_t raw_makecontext(void* malloced_stack, int stack_size,
- rawctx_entry_point_t entry_point, void* arg) {
- THROW_UNIMPLEMENTED;
+raw_stack_t raw_makecontext(void* malloced_stack, int stack_size, rawctx_entry_point_t entry_point,
+ simgrid::kernel::context::SwappedContext* arg)
+{
+ THROW_UNIMPLEMENTED;
}
-void raw_swapcontext(raw_stack_t* old, raw_stack_t new_context) {
- THROW_UNIMPLEMENTED;
+void raw_swapcontext(raw_stack_t* old, raw_stack_t new_context)
+{
+ THROW_UNIMPLEMENTED;
}
#endif
// ***** Method definitions
-namespace simgrid {
-namespace kernel {
-namespace context {
+namespace simgrid::kernel::context {
// RawContextFactory
-Context* RawContextFactory::create_context(std::function<void()> code, smx_actor_t actor)
+RawContext* RawContextFactory::create_context(std::function<void()>&& code, actor::ActorImpl* actor)
{
return this->new_context<RawContext>(std::move(code), actor, this);
}
// RawContext
-RawContext::RawContext(std::function<void()> code, smx_actor_t actor, SwappedContextFactory* factory)
+RawContext::RawContext(std::function<void()>&& code, actor::ActorImpl* actor, SwappedContextFactory* factory)
: SwappedContext(std::move(code), actor, factory)
{
- if (has_code()) {
- this->stack_top_ = raw_makecontext(get_stack(), smx_context_usable_stack_size, RawContext::wrapper, this);
- } else {
- if (MC_is_active())
- MC_ignore_heap(&stack_top_, sizeof(stack_top_));
- }
-}
-
-void RawContext::wrapper(void* arg)
-{
- RawContext* context = static_cast<RawContext*>(arg);
- ASAN_FINISH_SWITCH(nullptr, &context->asan_ctx_->asan_stack_, &context->asan_ctx_->asan_stack_size_);
- try {
- (*context)();
- context->Context::stop();
- } catch (ForcefulKillException const&) {
- XBT_DEBUG("Caught a ForcefulKillException");
- } catch (simgrid::Exception const& e) {
- XBT_INFO("Actor killed by an uncatched exception %s", simgrid::xbt::demangle(typeid(e).name()).get());
- throw;
+ XBT_VERB("Creating a context of stack %uMb", actor->get_stacksize() / 1024 / 1024);
+ if (has_code()) {
+ this->stack_top_ = raw_makecontext(get_stack(), actor->get_stacksize(), smx_ctx_wrapper, this);
}
- ASAN_ONLY(context->asan_stop_ = true);
- context->suspend();
}
-void RawContext::swap_into(SwappedContext* to_)
+void RawContext::swap_into_for_real(SwappedContext* to_)
{
- RawContext* to = static_cast<RawContext*>(to_);
- ASAN_ONLY(void* fake_stack = nullptr);
- ASAN_ONLY(to->asan_ctx_ = this);
- ASAN_START_SWITCH(this->asan_stop_ ? nullptr : &fake_stack, to->asan_stack_, to->asan_stack_size_);
+ const RawContext* to = static_cast<RawContext*>(to_);
raw_swapcontext(&this->stack_top_, to->stack_top_);
- ASAN_FINISH_SWITCH(fake_stack, &this->asan_ctx_->asan_stack_, &this->asan_ctx_->asan_stack_size_);
}
ContextFactory* raw_factory()
XBT_VERB("Using raw contexts. Because the glibc is just not good enough for us.");
return new RawContextFactory();
}
-}}}
+} // namespace simgrid::kernel::context