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(svn r21311) -Fix [FS#4260]: AIs in an infinite loop in e.g. autosave, but also getting settings and such from info.nut, would not be interrupted after a while causing OpenTTD to seem to not respond

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rubidium 2010-11-24 17:00:37 +00:00
parent 3330dee7e0
commit 090d6fb8b7
4 changed files with 35 additions and 22 deletions
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13
src/ai/ai_info.cpp
View File

@ -19,6 +19,9 @@
#include "../debug.h"
#include "../rev.h"
/** Maximum number of operations allowed for getting a particular setting. */
static const int MAX_GET_SETTING_OPS = 100000;
/** Configuration for AI start date, every AI has this setting. */
AIConfigItem _start_date_config = {
"start_date",
@ -78,19 +81,19 @@ static bool CheckAPIVersion(const char *api_version)
if (!info->GetSettings()) return SQ_ERROR;
}
if (info->engine->MethodExists(*info->SQ_instance, "MinVersionToLoad")) {
if (!info->engine->CallIntegerMethod(*info->SQ_instance, "MinVersionToLoad", &info->min_loadable_version)) return SQ_ERROR;
if (!info->engine->CallIntegerMethod(*info->SQ_instance, "MinVersionToLoad", &info->min_loadable_version, MAX_GET_SETTING_OPS)) return SQ_ERROR;
} else {
info->min_loadable_version = info->GetVersion();
}
/* When there is an UseAsRandomAI function, call it. */
if (info->engine->MethodExists(*info->SQ_instance, "UseAsRandomAI")) {
if (!info->engine->CallBoolMethod(*info->SQ_instance, "UseAsRandomAI", &info->use_as_random)) return SQ_ERROR;
if (!info->engine->CallBoolMethod(*info->SQ_instance, "UseAsRandomAI", &info->use_as_random, MAX_GET_SETTING_OPS)) return SQ_ERROR;
} else {
info->use_as_random = true;
}
/* Try to get the API version the AI is written for. */
if (info->engine->MethodExists(*info->SQ_instance, "GetAPIVersion")) {
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetAPIVersion", &info->api_version)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetAPIVersion", &info->api_version, MAX_GET_SETTING_OPS)) return SQ_ERROR;
if (!CheckAPIVersion(info->api_version)) {
DEBUG(ai, 1, "Loading info.nut from (%s.%d): GetAPIVersion returned invalid version", info->GetName(), info->GetVersion());
return SQ_ERROR;
@ -130,7 +133,7 @@ static bool CheckAPIVersion(const char *api_version)
bool AIInfo::GetSettings()
{
return this->engine->CallMethod(*this->SQ_instance, "GetSettings", NULL, -1);
return this->engine->CallMethod(*this->SQ_instance, "GetSettings", NULL, MAX_GET_SETTING_OPS);
}
AIInfo::AIInfo() :
@ -360,7 +363,7 @@ int AIInfo::GetSettingDefaultValue(const char *name) const
}
/* Cache the category */
if (!library->CheckMethod("GetCategory") || !library->engine->CallStringMethodStrdup(*library->SQ_instance, "GetCategory", &library->category)) {
if (!library->CheckMethod("GetCategory") || !library->engine->CallStringMethodStrdup(*library->SQ_instance, "GetCategory", &library->category, MAX_GET_SETTING_OPS)) {
delete library;
return SQ_ERROR;
}

13
src/ai/ai_instance.cpp
View File

@ -76,6 +76,11 @@
#include "../company_base.h"
#include "../fileio_func.h"
/** The maximum number of operations for saving or loading the data of an AI. */
static const int MAX_SL_OPS = 100000;
/** The maximum number of operations for initial start of an AI. */
static const int MAX_CONSTRUCTOR_OPS = 100000;
AIStorage::~AIStorage()
{
/* Free our pointers */
@ -344,7 +349,7 @@ void AIInstance::GameLoop()
AIObject::SetAllowDoCommand(false);
/* Run the constructor if it exists. Don't allow any DoCommands in it. */
if (this->engine->MethodExists(*this->instance, "constructor")) {
if (!this->engine->CallMethod(*this->instance, "constructor", 100000) || this->engine->IsSuspended()) {
if (!this->engine->CallMethod(*this->instance, "constructor", MAX_CONSTRUCTOR_OPS) || this->engine->IsSuspended()) {
if (this->engine->IsSuspended()) AILog::Error("This AI took too long to initialize. AI is not started.");
this->Died();
return;
@ -611,7 +616,7 @@ void AIInstance::Save()
bool backup_allow = AIObject::GetAllowDoCommand();
AIObject::SetAllowDoCommand(false);
try {
if (!this->engine->CallMethod(*this->instance, "Save", &savedata)) {
if (!this->engine->CallMethod(*this->instance, "Save", &savedata, MAX_SL_OPS)) {
/* The script crashed in the Save function. We can't kill
* it here, but do so in the next AI tick. */
SaveEmpty();
@ -634,7 +639,7 @@ void AIInstance::Save()
AIObject::SetAllowDoCommand(backup_allow);
if (!sq_istable(savedata)) {
AILog::Error("Save function should return a table.");
AILog::Error(this->engine->IsSuspended() ? "This AI took too long to Save." : "Save function should return a table.");
SaveEmpty();
this->engine->CrashOccurred();
return;
@ -776,7 +781,7 @@ bool AIInstance::CallLoad()
/* Call the AI load function. sq_call removes the arguments (but not the
* function pointer) from the stack. */
if (SQ_FAILED(sq_call(vm, 3, SQFalse, SQFalse, 100000))) return false;
if (SQ_FAILED(sq_call(vm, 3, SQFalse, SQFalse, MAX_SL_OPS))) return false;
/* Pop 1) The version, 2) the savegame data, 3) the object instance, 4) the function pointer. */
sq_pop(vm, 4);

21
src/script/script_info.cpp
View File

@ -16,6 +16,11 @@
#include "script_info.hpp"
#include "script_scanner.hpp"
/** Number of operations to get the author and similar information. */
static const int MAX_GET_OPS = 1000;
/** Number of operations to create an instance of an AI. */
static const int MAX_CREATEINSTANCE_OPS = 100000;
ScriptFileInfo::~ScriptFileInfo()
{
free((void *)this->author);
@ -66,17 +71,17 @@ bool ScriptFileInfo::CheckMethod(const char *name) const
info->main_script = strdup(scanner->GetMainScript());
/* Cache the data the info file gives us. */
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetAuthor", &info->author)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetName", &info->name)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetShortName", &info->short_name)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetDescription", &info->description)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetDate", &info->date)) return SQ_ERROR;
if (!info->engine->CallIntegerMethod(*info->SQ_instance, "GetVersion", &info->version)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "CreateInstance", &info->instance_name)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetAuthor", &info->author, MAX_GET_OPS)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetName", &info->name, MAX_GET_OPS)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetShortName", &info->short_name, MAX_GET_OPS)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetDescription", &info->description, MAX_GET_OPS)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetDate", &info->date, MAX_GET_OPS)) return SQ_ERROR;
if (!info->engine->CallIntegerMethod(*info->SQ_instance, "GetVersion", &info->version, MAX_GET_OPS)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "CreateInstance", &info->instance_name, MAX_CREATEINSTANCE_OPS)) return SQ_ERROR;
/* The GetURL function is optional. */
if (info->engine->MethodExists(*info->SQ_instance, "GetURL")) {
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetURL", &info->url)) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetURL", &info->url, MAX_GET_OPS)) return SQ_ERROR;
}
return 0;

10
src/script/squirrel.hpp
View File

@ -140,11 +140,11 @@ public:
* Call a method of an instance, in various flavors.
* @return False if the script crashed or returned a wrong type.
*/
bool CallMethod(HSQOBJECT instance, const char *method_name, HSQOBJECT *ret, int suspend = -1);
bool CallMethod(HSQOBJECT instance, const char *method_name, int suspend = -1) { return this->CallMethod(instance, method_name, NULL, suspend); }
bool CallStringMethodStrdup(HSQOBJECT instance, const char *method_name, const char **res, int suspend = -1);
bool CallIntegerMethod(HSQOBJECT instance, const char *method_name, int *res, int suspend = -1);
bool CallBoolMethod(HSQOBJECT instance, const char *method_name, bool *res, int suspend = -1);
bool CallMethod(HSQOBJECT instance, const char *method_name, HSQOBJECT *ret, int suspend);
bool CallMethod(HSQOBJECT instance, const char *method_name, int suspend) { return this->CallMethod(instance, method_name, NULL, suspend); }
bool CallStringMethodStrdup(HSQOBJECT instance, const char *method_name, const char **res, int suspend);
bool CallIntegerMethod(HSQOBJECT instance, const char *method_name, int *res, int suspend);
bool CallBoolMethod(HSQOBJECT instance, const char *method_name, bool *res, int suspend);
/**
* Check if a method exists in an instance.