* under the terms of the license (GNU LGPL) which comes with this package. */
#include <cassert>
+#include <cstddef>
#include <cstdlib>
+#include <memory>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
#include <xbt/log.h>
-#include <xbt/dynar.h>
#include <xbt/str.h>
#include <xbt/swag.h>
-#include "src/simix/smx_private.h"
+#include <simgrid/s4u/host.hpp>
+#include "src/simix/smx_private.h"
#include "src/mc/mc_smx.h"
#include "src/mc/ModelChecker.hpp"
using simgrid::mc::remote;
-extern "C" {
-
+/** HACK, Statically "upcast" a s_smx_process_t into a SimixProcessInformation
+ *
+ * This gets 'processInfo' from '&processInfo->copy'. It upcasts in the
+ * sense that we could achieve the same thing by having SimixProcessInformation
+ * inherit from s_smx_process_t but we don't really want to do that.
+ */
static inline
-bool is_in_vector(smx_process_t p, std::vector<simgrid::mc::SimixProcessInformation>& ps)
+simgrid::mc::SimixProcessInformation* process_info_cast(smx_process_t p)
{
- return (uintptr_t) p >= (uintptr_t) &ps[0]
- && (uintptr_t) p < (uintptr_t) &ps[ps.size()];
-}
+ simgrid::mc::SimixProcessInformation temp;
+ std::size_t offset = (char*) temp.copy.getBuffer() - (char*)&temp;
-static inline
-simgrid::mc::SimixProcessInformation* MC_smx_process_get_info(smx_process_t p)
-{
- assert(is_in_vector(p, mc_model_checker->process().smx_process_infos)
- || is_in_vector(p, mc_model_checker->process().smx_old_process_infos));
simgrid::mc::SimixProcessInformation* process_info =
- (simgrid::mc::SimixProcessInformation*)
- ((char*) p - offsetof(simgrid::mc::SimixProcessInformation, copy));
+ (simgrid::mc::SimixProcessInformation*) ((char*) p - offset);
return process_info;
}
-/** Load the remote swag of processes into a dynar
+/** Load the remote swag of processes into a vector
*
* @param process MCed process
- * @param target Local dynar (to be filled with copies of `s_smx_process_t`)
+ * @param target Local vector (to be filled with copies of `s_smx_process_t`)
* @param remote_swag Address of the process SWAG in the remote list
*/
static void MC_process_refresh_simix_process_list(
simgrid::mc::Process* process,
- std::vector<simgrid::mc::SimixProcessInformation>& target, xbt_swag_t remote_swag)
+ std::vector<simgrid::mc::SimixProcessInformation>& target,
+ simgrid::mc::RemotePtr<s_xbt_swag_t> remote_swag)
{
target.clear();
// swag = REMOTE(*simix_global->process_list)
s_xbt_swag_t swag;
- process->read_bytes(&swag, sizeof(swag), remote(remote_swag));
+ process->read_bytes(&swag, sizeof(swag), remote_swag);
- // Load each element of the dynar from the MCed process:
+ // Load each element of the vector from the MCed process:
int i = 0;
for (smx_process_t p = (smx_process_t) swag.head; p; ++i) {
// TODO, avoid to reload `&simix_global`, `simix_global`, `*simix_global`
- // simix_global_p = REMOTE(simix_global);
- smx_global_t simix_global_p;
- this->read_variable("simix_global", &simix_global_p, sizeof(simix_global_p));
+ static_assert(std::is_same<
+ std::unique_ptr<simgrid::simix::Global>,
+ decltype(simix_global)
+ >::value, "Unexpected type for simix_global");
+ static_assert(sizeof(simix_global) == sizeof(simgrid::simix::Global*),
+ "Bad size for simix_global");
+
+ // simix_global_p = REMOTE(simix_global.get());
+ RemotePtr<simgrid::simix::Global> simix_global_p =
+ this->read_variable<simgrid::simix::Global*>("simix_global");
// simix_global = REMOTE(*simix_global)
- s_smx_global_t simix_global;
- this->read_bytes(&simix_global, sizeof(simix_global),
- remote(simix_global_p));
+ Remote<simgrid::simix::Global> simix_global =
+ this->read<simgrid::simix::Global>(simix_global_p);
MC_process_refresh_simix_process_list(
- this, this->smx_process_infos, simix_global.process_list);
+ this, this->smx_process_infos,
+ remote(simix_global.getBuffer()->process_list));
MC_process_refresh_simix_process_list(
- this, this->smx_old_process_infos, simix_global.process_to_destroy);
+ this, this->smx_old_process_infos,
+ remote(simix_global.getBuffer()->process_to_destroy));
this->cache_flags_ |= Process::cache_simix_processes;
}
* @param process the MCed process
* @param req the simcall (copied in the local process)
*/
-smx_process_t MC_smx_simcall_get_issuer(smx_simcall_t req)
+smx_process_t MC_smx_simcall_get_issuer(s_smx_simcall_t const* req)
{
- if (mc_mode == MC_MODE_CLIENT)
- return req->issuer;
+ xbt_assert(mc_model_checker != nullptr);
// This is the address of the smx_process in the MCed process:
- void* address = req->issuer;
+ auto address = simgrid::mc::remote(req->issuer);
// Lookup by address:
for (auto& p : mc_model_checker->process().simix_processes())
if (p.address == address)
- return &p.copy;
+ return p.copy.getBuffer();
for (auto& p : mc_model_checker->process().old_simix_processes())
if (p.address == address)
- return &p.copy;
+ return p.copy.getBuffer();
xbt_die("Issuer not found");
}
-smx_process_t MC_smx_resolve_process(smx_process_t process_remote_address)
-{
- if (!process_remote_address)
- return nullptr;
- if (mc_mode == MC_MODE_CLIENT)
- return process_remote_address;
-
- simgrid::mc::SimixProcessInformation* process_info = MC_smx_resolve_process_info(process_remote_address);
- if (process_info)
- return &process_info->copy;
- else
- return nullptr;
-}
-
-simgrid::mc::SimixProcessInformation* MC_smx_resolve_process_info(smx_process_t process_remote_address)
-{
- if (mc_mode == MC_MODE_CLIENT)
- xbt_die("No process_info for local process is not enabled.");
- for (auto& process_info : mc_model_checker->process().smx_process_infos)
- if (process_info.address == process_remote_address)
- return &process_info;
- for (auto& process_info : mc_model_checker->process().smx_old_process_infos)
- if (process_info.address == process_remote_address)
- return &process_info;
- xbt_die("Process info not found");
-}
-
const char* MC_smx_process_get_host_name(smx_process_t p)
{
- if (mc_mode == MC_MODE_CLIENT)
+ if (mc_model_checker == nullptr)
return sg_host_get_name(p->host);
simgrid::mc::Process* process = &mc_model_checker->process();
- /* Horrible hack to find the offset of the id in the simgrid::s4u::Host.
+ /* HACK, Horrible hack to find the offset of the id in the simgrid::s4u::Host.
Offsetof is not supported for non-POD types but this should
- work in pratice for the targets currently supported by the MC
+ work in practice for the targets currently supported by the MC
as long as we do not add funny features to the Host class
(such as virtual base).
const size_t offset = (char*) &foo.host.name() - (char*) &foo.host;
// Read the simgrid::xbt::string in the MCed process:
- simgrid::mc::SimixProcessInformation* info = MC_smx_process_get_info(p);
- simgrid::xbt::string_data remote_string;
+ simgrid::mc::SimixProcessInformation* info = process_info_cast(p);
auto remote_string_address = remote(
(simgrid::xbt::string_data*) ((char*) p->host + offset));
- process->read_bytes(&remote_string, sizeof(remote_string), remote_string_address);
+ simgrid::xbt::string_data remote_string = process->read(remote_string_address);
char hostname[remote_string.len];
process->read_bytes(hostname, remote_string.len + 1, remote(remote_string.data));
info->hostname = mc_model_checker->get_host_name(hostname);
const char* MC_smx_process_get_name(smx_process_t p)
{
simgrid::mc::Process* process = &mc_model_checker->process();
- if (mc_mode == MC_MODE_CLIENT)
- return p->name;
- if (!p->name)
- return nullptr;
+ if (mc_model_checker == nullptr)
+ return p->name.c_str();
- simgrid::mc::SimixProcessInformation* info = MC_smx_process_get_info(p);
+ simgrid::mc::SimixProcessInformation* info = process_info_cast(p);
if (info->name.empty()) {
- char* name = process->read_string(p->name);
- info->name = name;
- free(name);
+ simgrid::xbt::string_data string_data = (simgrid::xbt::string_data&)p->name;
+ info->name = process->read_string(remote(string_data.data), string_data.len);
}
return info->name.c_str();
}
#if HAVE_SMPI
int MC_smpi_process_count(void)
{
- if (mc_mode == MC_MODE_CLIENT)
+ if (mc_model_checker == nullptr)
return smpi_process_count();
int res;
mc_model_checker->process().read_variable("process_count",
&maxpid, sizeof(maxpid));
return maxpid;
}
-
-}
