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JavaBridge.c
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JavaBridge.c
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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "JavaBridge.h"
#include "InterfaceDefines.h"
#include "JvmLocater.h"
#include "JniUtil.h"
#include "EventsJNIBridge.h"
#include "CUtils/Util.h"
#include "CUtils/SimpleLog.h"
#include "CUtils/SharedLibrary.h"
#include "ExternalAI/Interface/aidefines.h"
#include "ExternalAI/Interface/SAIInterfaceLibrary.h"
#include "ExternalAI/Interface/SAIInterfaceCallback.h"
#include "ExternalAI/Interface/SSkirmishAILibrary.h"
#include "ExternalAI/Interface/SSkirmishAICallback.h"
#include "System/SafeCStrings.h"
#include "lib/streflop/streflopC.h"
#include <jni.h>
#include <string.h> // strlen(), strcat(), strcpy()
#include <stdlib.h> // malloc(), calloc(), free()
#include <assert.h>
struct Properties {
size_t size;
const char** keys;
const char** values;
};
static int interfaceId = -1;
static const struct SAIInterfaceCallback* callback = NULL;
static struct Properties* jvmCfgProps = NULL;
static size_t skirmishAIId_sizeMax = 0;
static size_t* skirmishAIId_skirmishAiImpl;
/**
* Marks the actual storage capacity limit for AI implementations.
* There can not be more then this many implementations in use at any time.
*/
static size_t skirmishAiImpl_sizeMax = 0;
/**
* No more implementations can be found at indices equal or greater to this one,
* though there can also be free indices lower then this one.
*/
static size_t skirmishAiImpl_size = 0;
static char** skirmishAiImpl_className;
static jobject* skirmishAiImpl_instance;
static jobject* skirmishAiImpl_classLoader;
// vars used to integrate the JVM
// it is loaded at runtime, not at loadtime
static sharedLib_t jvmSharedLib = NULL;
typedef jint (JNICALL JNI_GetDefaultJavaVMInitArgs_t)(void* vmArgs);
typedef jint (JNICALL JNI_CreateJavaVM_t)(JavaVM** vm, void** jniEnv, void* vmArgs);
typedef jint (JNICALL JNI_GetCreatedJavaVMs_t)(JavaVM** vms, jsize vms_sizeMax, jsize* vms_size);
static JNI_GetDefaultJavaVMInitArgs_t* JNI_GetDefaultJavaVMInitArgs_f;
static JNI_CreateJavaVM_t* JNI_CreateJavaVM_f;
static JNI_GetCreatedJavaVMs_t* JNI_GetCreatedJavaVMs_f;
// ### JNI global vars ###
/// Java VM instance reference
static JavaVM* g_jvm = NULL;
/// AI Callback class
static jclass g_cls_aiCallback = NULL;
/// AI Callback Constructor: AICallback(int skirmishAIId)
static jmethodID g_m_aiCallback_ctor_I = NULL;
/// Basic AI interface.
static jclass g_cls_ai_int = NULL;
// ### General helper functions following ###
/// Sets the FPU state to how spring likes it
static inline void java_establishSpringEnv() {
//(*g_jvm)->DetachCurrentThread(g_jvm);
streflop_init_Simple();
}
/// The JVM sets the environment it wants automatically, so this is a no-op
static inline void java_establishJavaEnv() {}
static inline size_t minSize(size_t size1, size_t size2) {
return (size1 < size2) ? size1 : size2;
}
static const char* java_getValueByKey(const struct Properties* props, const char* key) {
return util_map_getValueByKey(props->size, props->keys, props->values, key);
}
// /**
// * Called when the JVM loads this native library.
// */
// JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void* reserved) {
// return JNI_VERSION_1_6;
// }
//
// /**
// * Called when the JVM unloads this native library.
// */
// JNIEXPORT void JNICALL JNI_OnUnload(JavaVM* vm, void* reserved) {}
// ### JNI helper functions following ###
/**
* Creates the AI Interface global Java class path.
*
* It will consist of the following:
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/AIInterface.jar
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/(j)?config/
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/(j)?config/[*].jar
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/(j)?resources/
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/(j)?resources/[*].jar
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/(j)?script/
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/(j)?script/[*].jar
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/jlib/
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/jlib/[*].jar
* TODO: {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/common/jlib/
* TODO: {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/common/jlib/[*].jar
*/
static bool java_createClassPath(char* classPathStr, const size_t classPathStr_sizeMax) {
// the dirs and .jar files in the following array
// will be concatenated with intermediate path separators
// to form the classPathStr
static const size_t classPath_sizeMax = 128;
char** classPath = (char**) calloc(classPath_sizeMax, sizeof(char*));
size_t classPath_size = 0;
// the Java AI Interfaces java library file path (.../AIInterface.jar)
// We need to search for this jar, instead of looking only where
// the AIInterface.so/InterfaceInfo.lua is, because on some systems
// (eg. Debian), the .so is in /usr/lib, and the .jar's are in /usr/shared.
char* mainJarPath = callback->DataDirs_allocatePath(interfaceId,
JAVA_AI_INTERFACE_LIBRARY_FILE_NAME,
false, false, false, false);
if (mainJarPath == NULL) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Couldn't find %s", JAVA_AI_INTERFACE_LIBRARY_FILE_NAME);
return false;
}
classPath[classPath_size++] = util_allocStrCpy(mainJarPath);
bool ok = util_getParentDir(mainJarPath);
if (!ok) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Retrieving the parent dir of the path to AIInterface.jar (%s) failed.",
mainJarPath);
return false;
}
char* jarsDataDir = mainJarPath;
mainJarPath = NULL;
// the directories in the following list will be searched for .jar files
// which will then be added to the classPathStr, plus the dirs will be added
// to the classPathStr directly, so you can keep .class files in there
static const size_t jarDirs_sizeMax = 128;
char** jarDirs = (char**) calloc(jarDirs_sizeMax, sizeof(char*));
size_t jarDirs_size = 0;
// add to classpath:
// {spring-data-dir}/Interfaces/Java/0.1/${x}/
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, jarsDataDir, "jconfig");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, jarsDataDir, "config");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, jarsDataDir, "jresources");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, jarsDataDir, "resources");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, jarsDataDir, "jscript");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, jarsDataDir, "script");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, jarsDataDir, "jlib");
// "lib" is for native libs only
// add the jar dirs (for .class files) and all contained .jars recursively
size_t jd, jf;
for (jd=0; (jd < jarDirs_size) && (classPath_size < classPath_sizeMax); ++jd) {
if (util_fileExists(jarDirs[jd])) {
// add the dir directly
// For this to work properly with URLClassPathHandler,
// we have to ensure there is a '/' at the end,
// for the class-path-part to be recognized as a directory.
classPath[classPath_size++] = util_allocStrCat(2, jarDirs[jd], "/");
// add the contained jars recursively
static const size_t jarFiles_sizeMax = 128;
char** jarFiles = (char**) calloc(jarFiles_sizeMax, sizeof(char*));
const size_t jarFiles_size = util_listFiles(jarDirs[jd], ".jar",
jarFiles, true, jarFiles_sizeMax);
for (jf=0; (jf < jarFiles_size) && (classPath_size < classPath_sizeMax); ++jf) {
classPath[classPath_size++] = util_allocStrCatFSPath(2,
jarDirs[jd], jarFiles[jf]);
FREE(jarFiles[jf]);
}
FREE(jarFiles);
}
FREE(jarDirs[jd]);
}
FREE(jarDirs);
// concat the classpath entries
classPathStr[0] = '\0';
if (classPath[0] != NULL) {
STRCAT_T(classPathStr, classPathStr_sizeMax, classPath[0]);
FREE(classPath[0]);
}
size_t cp;
for (cp=1; cp < classPath_size; ++cp) {
if (classPath[cp] != NULL) {
STRCAT_T(classPathStr, classPathStr_sizeMax, ENTRY_DELIM);
STRCAT_T(classPathStr, classPathStr_sizeMax, classPath[cp]);
FREE(classPath[cp]);
}
}
FREE(classPath);
return true;
}
/**
* Creates a Skirmish AI local Java class path.
*
* It will consist of the following:
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/{ai-version}/SkirmishAI.jar
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/{ai-version}/(j)?config/
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/{ai-version}/(j)?config/[*].jar
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/{ai-version}/(j)?resources/
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/{ai-version}/(j)?resources/[*].jar
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/{ai-version}/(j)?script/
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/{ai-version}/(j)?script/[*].jar
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/{ai-version}/jlib/
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/{ai-version}/jlib/[*].jar
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/common/(j)?config/
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/common/(j)?config/[*].jar
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/common/(j)?resources/
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/common/(j)?resources/[*].jar
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/common/(j)?script/
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/common/(j)?script/[*].jar
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/common/jlib/
* {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/common/jlib/[*].jar
*/
static size_t java_createAIClassPath(const char* shortName, const char* version,
char** classPathParts, const size_t classPathParts_sizeMax) {
size_t classPathParts_size = 0;
// the .jar files in the following list will be added to the classpath
const size_t jarFiles_sizeMax = classPathParts_sizeMax;
char** jarFiles = (char**) calloc(jarFiles_sizeMax, sizeof(char*));
size_t jarFiles_size = 0;
const char* const skirmDD =
callback->SkirmishAIs_Info_getValueByKey(interfaceId,
shortName, version,
SKIRMISH_AI_PROPERTY_DATA_DIR);
if (skirmDD == NULL) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Retrieving the data-dir of Skirmish AI %s-%s failed.",
shortName, version);
}
// {spring-data-dir}/{SKIRMISH_AI_DATA_DIR}/{ai-name}/{ai-version}/SkirmishAI.jar
jarFiles[jarFiles_size++] = util_allocStrCatFSPath(2,
skirmDD, "SkirmishAI.jar");
// the directories in the following list will be searched for .jar files
// which then will be added to the classpath, plus they will be added
// to the classpath directly, so you can keep .class files in there
const size_t jarDirs_sizeMax = classPathParts_sizeMax;
char** jarDirs = (char**) calloc(jarDirs_sizeMax, sizeof(char*));
size_t jarDirs_size = 0;
// add to classpath ...
// {spring-data-dir}/Skirmish/MyJavaAI/0.1/SkirmishAI/
// this can be usefull for AI devs while testing,
// if they do not want to put everything into a jar all the time
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDD, "SkirmishAI");
// add to classpath:
// {spring-data-dir}/Skirmish/MyJavaAI/0.1/${x}/
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDD, "jconfig");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDD, "config");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDD, "jresources");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDD, "resources");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDD, "jscript");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDD, "script");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDD, "jlib");
// "lib" is for native libs only
// add the dir common for all versions of the Skirmish AI,
// if it is specified and exists
const char* const skirmDDCommon =
callback->SkirmishAIs_Info_getValueByKey(interfaceId,
shortName, version,
SKIRMISH_AI_PROPERTY_DATA_DIR_COMMON);
if (skirmDDCommon != NULL) {
// add to classpath:
// {spring-data-dir}/Skirmish/MyJavaAI/common/${x}/
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDDCommon, "jconfig");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDDCommon, "config");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDDCommon, "jresources");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDDCommon, "resources");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDDCommon, "jscript");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDDCommon, "script");
jarDirs[jarDirs_size++] = util_allocStrCatFSPath(2, skirmDDCommon, "jlib");
// "lib" is for native libs only
}
// add the directly specified .jar files
size_t jf;
for (jf = 0; (jf < jarFiles_size) && (classPathParts_size < classPathParts_sizeMax); ++jf) {
classPathParts[classPathParts_size++] = util_allocStrCpy(jarFiles[jf]);
FREE(jarFiles[jf]);
}
// add the dirs and the contained .jar files
size_t jd, sjf;
for (jd = 0; (jd < jarDirs_size) && (classPathParts_size < classPathParts_sizeMax); ++jd)
{
if (jarDirs[jd] != NULL && util_fileExists(jarDirs[jd])) {
// add the jar dir (for .class files)
// For this to work properly with URLClassPathHandler,
// we have to ensure there is a '/' at the end,
// for the class-path-part to be recognized as a directory.
classPathParts[classPathParts_size++] = util_allocStrCat(2, jarDirs[jd], "/");
// add the jars in the dir
const size_t subJarFiles_sizeMax = classPathParts_sizeMax - classPathParts_size;
char** subJarFiles = (char**) calloc(subJarFiles_sizeMax, sizeof(char*));
const size_t subJarFiles_size = util_listFiles(jarDirs[jd], ".jar",
subJarFiles, true, subJarFiles_sizeMax);
for (sjf = 0; (sjf < subJarFiles_size) && (classPathParts_size < classPathParts_sizeMax); ++sjf) {
// .../[*].jar
classPathParts[classPathParts_size++] =
util_allocStrCatFSPath(2, jarDirs[jd], subJarFiles[sjf]);
FREE(subJarFiles[sjf]);
}
FREE(subJarFiles);
}
FREE(jarDirs[jd]);
}
FREE(jarDirs);
FREE(jarFiles);
return classPathParts_size;
}
static jobject java_createAIClassLoader(JNIEnv* env,
const char* shortName, const char* version) {
jobject o_jClsLoader = NULL;
static const size_t classPathParts_sizeMax = 512;
char** classPathParts = (char**) calloc(classPathParts_sizeMax, sizeof(char*));
const size_t classPathParts_size =
java_createAIClassPath(shortName, version, classPathParts, classPathParts_sizeMax);
jobjectArray o_cppURLs = jniUtil_createURLArray(env, classPathParts_size);
if (o_cppURLs != NULL) {
#ifdef _WIN32
static const char* FILE_URL_PREFIX = "file:///";
#else // _WIN32
static const char* FILE_URL_PREFIX = "file://";
#endif // _WIN32
size_t cpp;
for (cpp = 0; cpp < classPathParts_size; ++cpp) {
#ifdef _WIN32
// we can not use windows path separators in file URLs
util_strReplaceChar(classPathParts[cpp], '\\', '/');
#endif
char* str_fileUrl = util_allocStrCat(2, FILE_URL_PREFIX, classPathParts[cpp]);
// TODO: check/test if this is allowed/ok
FREE(classPathParts[cpp]);
simpleLog_logL(LOG_LEVEL_INFO,
"Skirmish AI %s %s class-path part %i: \"%s\"",
shortName, version, cpp, str_fileUrl);
jobject jurl_fileUrl = jniUtil_createURLObject(env, str_fileUrl);
FREE(str_fileUrl);
if (jurl_fileUrl == NULL) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Skirmish AI %s %s class-path part %i (\"%s\"): failed to create a URL",
shortName, version, cpp, str_fileUrl);
o_cppURLs = NULL;
break;
}
const bool inserted = jniUtil_insertURLIntoArray(env, o_cppURLs, cpp, jurl_fileUrl);
if (!inserted) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Skirmish AI %s %s class-path part %i (\"%s\"): failed to insert",
shortName, version, cpp, str_fileUrl);
o_cppURLs = NULL;
break;
}
}
}
if (o_cppURLs != NULL) {
o_jClsLoader = jniUtil_createURLClassLoader(env, o_cppURLs);
if (o_jClsLoader != NULL) {
o_jClsLoader = jniUtil_makeGlobalRef(env, o_jClsLoader, "Skirmish AI class-loader");
}
}
FREE(classPathParts);
return o_jClsLoader;
}
/**
* Load the interfaces JVM properties file.
*/
static bool java_readJvmCfgFile(struct Properties* props) {
bool read = false;
const size_t props_sizeMax = 256;
props->size = 0;
props->keys = (const char**) calloc(props_sizeMax, sizeof(char*));
props->values = (const char**) calloc(props_sizeMax, sizeof(char*));
// ### read JVM options config file ###
char* jvmPropFile = callback->DataDirs_allocatePath(interfaceId,
JVM_PROPERTIES_FILE, false, false, false, false);
if (jvmPropFile == NULL) {
// if the version specific file does not exist,
// try to get the common one
jvmPropFile = callback->DataDirs_allocatePath(interfaceId,
JVM_PROPERTIES_FILE, false, false, false, true);
}
if (jvmPropFile != NULL) {
props->size = util_parsePropertiesFile(jvmPropFile,
props->keys, props->values, props_sizeMax);
read = true;
simpleLog_logL(LOG_LEVEL_INFO,
"JVM: arguments loaded from: %s", jvmPropFile);
} else {
props->size = 0;
read = false;
simpleLog_logL(LOG_LEVEL_INFO,
"JVM: arguments NOT loaded from: %s", jvmPropFile);
}
FREE(jvmPropFile);
return read;
}
/**
* Creates the Java library path.
* -> where native shared libraries are searched
*
* It will consist of the following:
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/lib/
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/common/
* {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/common/lib/
*/
static bool java_createNativeLibsPath(char* libraryPath, const size_t libraryPath_sizeMax) {
// {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/
const char* const dd_r =
callback->AIInterface_Info_getValueByKey(interfaceId,
AI_INTERFACE_PROPERTY_DATA_DIR);
if (dd_r == NULL) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Unable to find read-only data-dir.");
return false;
} else {
STRCPY_T(libraryPath, libraryPath_sizeMax, dd_r);
}
// {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/{version}/lib/
char* dd_lib_r = callback->DataDirs_allocatePath(interfaceId,
NATIVE_LIBS_DIR, false, false, true, false);
if (dd_lib_r == NULL) {
simpleLog_logL(LOG_LEVEL_NOTICE,
"Unable to find read-only native libs data-dir (optional): %s",
NATIVE_LIBS_DIR);
} else {
STRCAT_T(libraryPath, libraryPath_sizeMax, ENTRY_DELIM);
STRCAT_T(libraryPath, libraryPath_sizeMax, dd_lib_r);
FREE(dd_lib_r);
}
// {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/common/
const char* const dd_r_common =
callback->AIInterface_Info_getValueByKey(interfaceId,
AI_INTERFACE_PROPERTY_DATA_DIR_COMMON);
if (dd_r_common == NULL || !util_fileExists(dd_r_common)) {
simpleLog_logL(LOG_LEVEL_NOTICE,
"Unable to find common read-only data-dir (optional).");
} else {
STRCAT_T(libraryPath, libraryPath_sizeMax, ENTRY_DELIM);
STRCAT_T(libraryPath, libraryPath_sizeMax, dd_r_common);
}
// {spring-data-dir}/{AI_INTERFACES_DATA_DIR}/Java/common/lib/
if (dd_r_common != NULL) {
char* dd_lib_r_common = callback->DataDirs_allocatePath(interfaceId,
NATIVE_LIBS_DIR, false, false, true, true);
if (dd_lib_r_common == NULL || !util_fileExists(dd_lib_r_common)) {
simpleLog_logL(LOG_LEVEL_NOTICE,
"Unable to find common read-only native libs data-dir (optional).");
} else {
STRCAT_T(libraryPath, libraryPath_sizeMax, ENTRY_DELIM);
STRCAT_T(libraryPath, libraryPath_sizeMax, dd_lib_r_common);
FREE(dd_lib_r_common);
}
}
return true;
}
static bool java_createJavaVMInitArgs(struct JavaVMInitArgs* vm_args, const struct Properties* jvmProps) {
// ### evaluate JNI version to use ###
//jint jniVersion = JNI_VERSION_1_1;
//jint jniVersion = JNI_VERSION_1_2;
jint jniVersion = JNI_VERSION_1_4;
//jint jniVersion = JNI_VERSION_1_6;
if (jvmProps != NULL) {
const char* jniVersionFromCfg = java_getValueByKey(jvmProps,
"jvm.jni.version");
if (jniVersionFromCfg != NULL) {
unsigned long int jniVersion_tmp =
strtoul(jniVersionFromCfg, NULL, 16);
if (jniVersion_tmp != 0/* && jniVersion_tmp != ULONG_MAX*/) {
jniVersion = (jint) jniVersion_tmp;
}
}
}
simpleLog_logL(LOG_LEVEL_INFO, "JVM: JNI version: %#x", jniVersion);
vm_args->version = jniVersion;
// ### check if unrecognized JVM options should be ignored ###
// if false, the JVM creation will fail if an
// unknown or invalid option was specified
bool ignoreUnrecognized = true;
if (jvmProps != NULL) {
const char* ignoreUnrecognizedFromCfg = java_getValueByKey(jvmProps,
"jvm.arguments.ignoreUnrecognized");
if (ignoreUnrecognizedFromCfg != NULL
&& !util_strToBool(ignoreUnrecognizedFromCfg)) {
ignoreUnrecognized = false;
}
}
if (ignoreUnrecognized) {
simpleLog_logL(LOG_LEVEL_INFO,
"JVM: ignoring unrecognized options");
vm_args->ignoreUnrecognized = JNI_TRUE;
} else {
simpleLog_logL(LOG_LEVEL_INFO,
"JVM: NOT ignoring unrecognized options");
vm_args->ignoreUnrecognized = JNI_FALSE;
}
// ### create the Java class-path option ###
// autogenerate the class path
static const size_t classPath_sizeMax = 8 * 1024;
char* classPath = util_allocStr(classPath_sizeMax);
// ..., autogenerate it ...
if (!java_createClassPath(classPath, classPath_sizeMax)) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed creating Java class-path.");
FREE(classPath);
return false;
}
if (jvmProps != NULL) {
// ..., and append the part from the jvm options properties file,
// if it is specified there
const char* clsPathFromCfg = java_getValueByKey(jvmProps,
"jvm.option.java.class.path");
if (clsPathFromCfg != NULL) {
STRCAT_T(classPath, classPath_sizeMax, ENTRY_DELIM);
STRCAT_T(classPath, classPath_sizeMax, clsPathFromCfg);
}
}
// create the java.class.path option
static const size_t classPathOpt_sizeMax = 8 * 1024;
char* classPathOpt = util_allocStr(classPathOpt_sizeMax);
STRCPY_T(classPathOpt, classPathOpt_sizeMax, "-Djava.class.path=");
STRCAT_T(classPathOpt, classPathOpt_sizeMax, classPath);
FREE(classPath);
// ### create the Java library-path option ###
// autogenerate the java library path
static const size_t libraryPath_sizeMax = 4 * 1024;
char* libraryPath = util_allocStr(libraryPath_sizeMax);
// ..., autogenerate it ...
if (!java_createNativeLibsPath(libraryPath, libraryPath_sizeMax)) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed creating Java library-path.");
FREE(libraryPath);
return false;
}
if (jvmProps != NULL) {
// ..., and append the part from the jvm options properties file,
// if it is specified there
const char* libPathFromCfg = java_getValueByKey(jvmProps,
"jvm.option.java.library.path");
if (libPathFromCfg != NULL) {
STRCAT_T(libraryPath, libraryPath_sizeMax, ENTRY_DELIM);
STRCAT_T(libraryPath, libraryPath_sizeMax, libPathFromCfg);
}
}
// create the java.library.path option ...
// autogenerate it, and append the part from the jvm options file,
// if it is specified there
static const size_t libraryPathOpt_sizeMax = 4 * 1024;
char* libraryPathOpt = util_allocStr(libraryPathOpt_sizeMax);
STRCPY_T(libraryPathOpt, libraryPathOpt_sizeMax, "-Djava.library.path=");
STRCAT_T(libraryPathOpt, libraryPathOpt_sizeMax, libraryPath);
FREE(libraryPath);
// ### create and set all JVM options ###
static const size_t strOptions_sizeMax = 64;
const char* strOptions[strOptions_sizeMax];
size_t op = 0;
strOptions[op++] = classPathOpt;
strOptions[op++] = libraryPathOpt;
static const char* const JCPVAL = "-Djava.class.path=";
const size_t JCPVAL_size = strlen(JCPVAL);
static const char* const JLPVAL = "-Djava.library.path=";
const size_t JLPVAL_size = strlen(JCPVAL);
if (jvmProps != NULL) {
// ### add string options from the JVM config file with property name "jvm.option.x" ###
int i;
for (i=0; i < jvmProps->size; ++i) {
if (strcmp(jvmProps->keys[i], "jvm.option.x") == 0) {
const char* const val = jvmProps->values[i];
const size_t val_size = strlen(val);
// ignore "-Djava.class.path=..."
// and "-Djava.library.path=..." options
if (strncmp(val, JCPVAL, minSize(val_size, JCPVAL_size)) != 0 &&
strncmp(val, JLPVAL, minSize(val_size, JLPVAL_size)) != 0) {
strOptions[op++] = val;
}
}
}
} else {
// ### ... or set default ones, if the JVM config file was not found ###
simpleLog_logL(LOG_LEVEL_WARNING, "JVM: properties file ("JVM_PROPERTIES_FILE") not found; using default options.");
strOptions[op++] = "-Xms64M";
strOptions[op++] = "-Xmx512M";
strOptions[op++] = "-Xss512K";
strOptions[op++] = "-Xoss400K";
#if defined DEBUG
strOptions[op++] = "-Xcheck:jni";
strOptions[op++] = "-verbose:jni";
strOptions[op++] = "-XX:+UnlockDiagnosticVMOptions";
strOptions[op++] = "-XX:+LogVMOutput";
strOptions[op++] = "-Xdebug";
strOptions[op++] = "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=7777";
// disable JIT (required for debugging under the classical VM)
strOptions[op++] = "-Djava.compiler=NONE";
// disable old JDB
strOptions[op++] = "-Xnoagent";
#endif // defined DEBUG
}
const size_t options_size = op;
vm_args->options = (struct JavaVMOption*) calloc(options_size, sizeof(struct JavaVMOption));
// fill strOptions into the JVM options
simpleLog_logL(LOG_LEVEL_INFO, "JVM: options:", options_size);
char* dd_rw = callback->DataDirs_allocatePath(interfaceId,
"", true, true, true, false);
size_t i;
jint nOptions = 0;
for (i = 0; i < options_size; ++i) {
char* tmpOptionString = util_allocStrReplaceStr(strOptions[i],
"${home-dir}", dd_rw);
// do not add empty options
if (tmpOptionString != NULL) {
if (strlen(tmpOptionString) > 0) {
vm_args->options[nOptions].optionString = tmpOptionString;
vm_args->options[nOptions].extraInfo = NULL;
simpleLog_logL(LOG_LEVEL_INFO, "JVM option %ul: %s", nOptions, tmpOptionString);
nOptions++;
} else {
free(tmpOptionString);
tmpOptionString = NULL;
}
}
}
vm_args->nOptions = nOptions;
FREE(dd_rw);
FREE(classPathOpt);
FREE(libraryPathOpt);
simpleLog_logL(LOG_LEVEL_INFO, "");
return true;
}
static JNIEnv* java_reattachCurrentThread() {
JNIEnv* env = NULL;
simpleLog_logL(LOG_LEVEL_DEBUG, "Reattaching current thread...");
//const jint res = (*g_jvm)->AttachCurrentThreadAsDaemon(g_jvm, (void**) &env, NULL);
const jint res = (*g_jvm)->AttachCurrentThread(g_jvm, (void**) &env, NULL);
if (res != 0) {
env = NULL;
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed attaching JVM to current thread(2): %i - %s",
res, jniUtil_getJniRetValDescription(res));
}
return env;
}
static JNIEnv* java_getJNIEnv() {
JNIEnv* ret = NULL;
if (g_jvm == NULL) {
simpleLog_logL(LOG_LEVEL_INFO, "Creating the JVM.");
JNIEnv* env = NULL;
JavaVM* jvm = NULL;
struct JavaVMInitArgs vm_args;
jint res = 0;
if (!java_createJavaVMInitArgs(&vm_args, jvmCfgProps)) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed initializing JVM init-arguments.");
goto end;
}
// Looking for existing JVMs might be problematic,
// cause they could be initialized with other
// JVM-arguments then we need.
// But as we can not use DestroyJavaVM, cause it makes
// creating a new one for hte same process impossible
// (a (SUN?) JVM limitation), we have to do it this way,
// to support /aireload and /aicontrol for Java Skirmish AIs.
simpleLog_logL(LOG_LEVEL_INFO, "looking for existing JVMs ...");
jsize numJVMsFound = 0;
// jint JNI_GetCreatedJavaVMs(JavaVM **vmBuf, jsize bufLen, jsize *nVMs);
// Returns all Java VMs that have been created.
// Pointers to VMs are written in the buffer vmBuf,
// in the order they were created.
static const int maxVmsToFind = 1;
res = JNI_GetCreatedJavaVMs_f(&jvm, maxVmsToFind, &numJVMsFound);
if (res != 0) {
jvm = NULL;
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed fetching list of running JVMs: %i - %s",
res, jniUtil_getJniRetValDescription(res));
goto end;
}
simpleLog_logL(LOG_LEVEL_INFO, "number of existing JVMs: %i", numJVMsFound);
if (numJVMsFound > 0) {
simpleLog_logL(LOG_LEVEL_INFO, "using an already running JVM.");
} else {
simpleLog_logL(LOG_LEVEL_INFO, "creating JVM...");
res = JNI_CreateJavaVM_f(&jvm, (void**) &env, &vm_args);
if (res != 0 || (*env)->ExceptionCheck(env)) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed to create Java VM: %i - %s",
res, jniUtil_getJniRetValDescription(res));
goto end;
}
}
// free the JavaVMInitArgs content
jint i;
for (i = 0; i < vm_args.nOptions; ++i) {
FREE(vm_args.options[i].optionString);
}
FREE(vm_args.options);
//res = (*jvm)->AttachCurrentThreadAsDaemon(jvm, (void**) &env, NULL);
res = (*jvm)->AttachCurrentThread(jvm, (void**) &env, NULL);
if (res < 0 || (*env)->ExceptionCheck(env)) {
if ((*env)->ExceptionCheck(env)) {
(*env)->ExceptionDescribe(env);
}
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed to attach JVM to current thread: %i - %s",
res, jniUtil_getJniRetValDescription(res));
goto end;
}
end:
if (env == NULL || jvm == NULL || (*env)->ExceptionCheck(env)
|| res != 0) {
simpleLog_logL(LOG_LEVEL_ERROR, "JVM: Failed creating.");
if (env != NULL && (*env)->ExceptionCheck(env)) {
(*env)->ExceptionDescribe(env);
}
if (jvm != NULL) {
// Never destroy the JVM, because it can not be created again
// for the same thread; would allways fail with return value -1
//res = (*jvm)->DestroyJavaVM(jvm);
}
g_jvm = NULL;
ret = NULL;
} else {
g_jvm = jvm;
ret = env;
}
} else {
ret = java_reattachCurrentThread();
}
return ret;
}
bool java_unloadJNIEnv() {
if (g_jvm != NULL) {
simpleLog_logL(LOG_LEVEL_INFO, "JVM: Unloading ...");
//JNIEnv* env = java_getJNIEnv();
// We have to be the ONLY running thread (native and Java)
// this may not help, but will not hurt either
//jint res = (*g_jvm)->AttachCurrentThreadAsDaemon(g_jvm,
// (void**) &g_jniEnv, NULL);
//res = jvm->AttachCurrentThread((void**) & jniEnv, NULL);
/*if (res < 0 || (*g_jniEnv)->ExceptionCheck(g_jniEnv)) {
if ((*g_jniEnv)->ExceptionCheck(g_jniEnv)) {
(*g_jniEnv)->ExceptionDescribe(g_jniEnv);
}
simpleLog_logL(LOG_LEVEL_ERROR,
"JVM: Can not Attach to the current thread: %i - %s",
res, jniUtil_getJniRetValDescription(res));
return false;
}*/
const jint res = (*g_jvm)->DetachCurrentThread(g_jvm);
if (res != 0) {
simpleLog_logL(LOG_LEVEL_ERROR,
"JVM: Failed detaching current thread: %i - %s",
res, jniUtil_getJniRetValDescription(res));
return false;
}
// Never destroy the JVM, because it can not be created again
// for the same thread; would allways fail with return value -1,
// which would be a problem when using the /aicontrol or /aireload
// commands on java AIs
/*res = (*g_jvm)->DestroyJavaVM(g_jvm);
if (res != 0) {
simpleLog_logL(LOG_LEVEL_ERROR,
"JVM: Failed destroying: %i - %s",
res, jniUtil_getJniRetValDescription(res));
return false;
} else {
simpleLog_logL(LOG_LEVEL_NOTICE,
"JVM: Successfully destroyed");
g_jvm = NULL;
}*/
java_establishSpringEnv();
}
return true;
}
bool java_preloadJNIEnv() {
java_establishJavaEnv();
JNIEnv* env = java_getJNIEnv();
java_establishSpringEnv();
return env != NULL;
}
bool java_initStatic(int _interfaceId,
const struct SAIInterfaceCallback* _callback) {
interfaceId = _interfaceId;
callback = _callback;
// Read the jvm properties config file
jvmCfgProps = (struct Properties*) malloc(sizeof(struct Properties));
java_readJvmCfgFile(jvmCfgProps);
skirmishAIId_sizeMax = callback->SkirmishAIs_getSize(interfaceId);
skirmishAiImpl_sizeMax = skirmishAIId_sizeMax;
skirmishAiImpl_size = 0;
skirmishAIId_skirmishAiImpl = (size_t*) calloc(skirmishAIId_sizeMax, sizeof(size_t));
size_t t;
for (t = 0; t < skirmishAIId_sizeMax; ++t) {
skirmishAIId_skirmishAiImpl[t] = 999999;
}
skirmishAiImpl_className = (char**) calloc(skirmishAiImpl_sizeMax, sizeof(char*));
skirmishAiImpl_instance = (jobject*) calloc(skirmishAiImpl_sizeMax, sizeof(jobject));
skirmishAiImpl_classLoader = (jobject*) calloc(skirmishAiImpl_sizeMax, sizeof(jobject));
size_t sai;
for (sai = 0; sai < skirmishAiImpl_sizeMax; ++sai) {
skirmishAiImpl_className[sai] = NULL;
skirmishAiImpl_instance[sai] = NULL;
skirmishAiImpl_classLoader[sai] = NULL;
}
// dynamically load the JVM
char* jreLocationFile = callback->DataDirs_allocatePath(interfaceId,
JRE_LOCATION_FILE, false, false, false, false);
static const size_t jrePath_sizeMax = 1024;
char jrePath[jrePath_sizeMax];
bool jreFound = GetJREPath(jrePath, jrePath_sizeMax, jreLocationFile, NULL);
if (!jreFound) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed locating a JRE installation"
", you may specify the JAVA_HOME env var.");
return false;
} else {
simpleLog_logL(LOG_LEVEL_NOTICE,
"Using JRE (can be changed with JAVA_HOME): %s", jrePath);
}
FREE(jreLocationFile);
#if defined __arch64__
static const char* defJvmType = "server";
#else
static const char* defJvmType = "client";
#endif
const char* jvmType = java_getValueByKey(jvmCfgProps, "jvm.type");
if (jvmType == NULL) {
jvmType = defJvmType;
}
static const size_t jvmLibPath_sizeMax = 1024;
char jvmLibPath[jvmLibPath_sizeMax];
bool jvmLibFound = GetJVMPath(jrePath, jvmType, jvmLibPath,
jvmLibPath_sizeMax, NULL);
if (!jvmLibFound) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed locating the %s version of the JVM, please contact spring devs.", jvmType);
return false;
}
jvmSharedLib = sharedLib_load(jvmLibPath);
if (!sharedLib_isLoaded(jvmSharedLib)) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed to load the JVM at \"%s\".", jvmLibPath);
return false;
} else {
simpleLog_logL(LOG_LEVEL_NOTICE,
"Successfully loaded the JVM shared library at \"%s\".", jvmLibPath);
JNI_GetDefaultJavaVMInitArgs_f = (JNI_GetDefaultJavaVMInitArgs_t*)
sharedLib_findAddress(jvmSharedLib, "JNI_GetDefaultJavaVMInitArgs");
if (JNI_GetDefaultJavaVMInitArgs_f == NULL) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed to load the JVM, function \"%s\" not exported.", "JNI_GetDefaultJavaVMInitArgs");
return false;
}
JNI_CreateJavaVM_f = (JNI_CreateJavaVM_t*)
sharedLib_findAddress(jvmSharedLib, "JNI_CreateJavaVM");
if (JNI_CreateJavaVM_f == NULL) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed to load the JVM, function \"%s\" not exported.", "JNI_CreateJavaVM");
return false;
}
JNI_GetCreatedJavaVMs_f = (JNI_GetCreatedJavaVMs_t*)
sharedLib_findAddress(jvmSharedLib, "JNI_GetCreatedJavaVMs");
if (JNI_GetCreatedJavaVMs_f == NULL) {
simpleLog_logL(LOG_LEVEL_ERROR,
"Failed to load the JVM, function \"%s\" not exported.", "JNI_GetCreatedJavaVMs");
return false;
}
}
java_establishJavaEnv();
JNIEnv* env = java_getJNIEnv();
bool success = (env != NULL);