asmhatreandClaude Sonnet 5.5
ecceaa8b32
jextract-25 early-access build (25-jextract+2-4) on JDK 25.0.5+8 against SQLite 3.45.1: 25 functions and 13 constants generated into 4 committed files (the whole header would be 83 files), a small Db wrapper, the four arena kinds used wrongly on purpose, ADDRESS vs C_POINTER zero-length vs unbounded segments and the SIGSEGV from getString on a NULL pointer, sqlite3_open out-parameter, return codes to exceptions, a sqlite3_exec upcall and the VM exit when it throws, the JDK 25 native-access warning and --illegal-native-access=deny, library loading failures, and a JMH benchmark of FFM vs hand-written JNI vs plain Java (indicative only: shared 2-CPU machine). Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b6Kg9RWSTJzyz6KP9X
70 lines
2.8 KiB
C
70 lines
2.8 KiB
C
/* The hand-written JNI shim: one C function per Java native method, with the marshalling done by hand.
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Header generated by `javac -h`; see scripts/build-jni.sh. */
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#include <stdint.h>
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#include <jni.h>
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#include <sqlite3.h>
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#include "bench_SqliteJni.h"
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JNIEXPORT jint JNICALL Java_bench_SqliteJni_versionNumber(JNIEnv *env, jclass c) {
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return sqlite3_libversion_number();
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}
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JNIEXPORT jint JNICALL Java_bench_SqliteJni_strlike(JNIEnv *env, jclass c, jstring glob, jstring text) {
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const char *g = (*env)->GetStringUTFChars(env, glob, NULL);
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const char *t = (*env)->GetStringUTFChars(env, text, NULL);
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int r = sqlite3_strlike(g, t, 0);
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(*env)->ReleaseStringUTFChars(env, text, t);
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(*env)->ReleaseStringUTFChars(env, glob, g);
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return r;
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}
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JNIEXPORT jlong JNICALL Java_bench_SqliteJni_open(JNIEnv *env, jclass c, jstring path) {
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const char *p = (*env)->GetStringUTFChars(env, path, NULL);
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sqlite3 *db = NULL;
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int rc = sqlite3_open(p, &db);
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(*env)->ReleaseStringUTFChars(env, path, p);
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return rc == SQLITE_OK ? (jlong)(intptr_t)db : 0;
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}
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JNIEXPORT jint JNICALL Java_bench_SqliteJni_exec(JNIEnv *env, jclass c, jlong db, jstring sql) {
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const char *s = (*env)->GetStringUTFChars(env, sql, NULL);
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int rc = sqlite3_exec((sqlite3 *)(intptr_t)db, s, NULL, NULL, NULL);
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(*env)->ReleaseStringUTFChars(env, sql, s);
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return rc;
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}
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JNIEXPORT jlong JNICALL Java_bench_SqliteJni_prepare(JNIEnv *env, jclass c, jlong db, jstring sql) {
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const char *s = (*env)->GetStringUTFChars(env, sql, NULL);
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sqlite3_stmt *st = NULL;
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int rc = sqlite3_prepare_v2((sqlite3 *)(intptr_t)db, s, -1, &st, NULL);
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(*env)->ReleaseStringUTFChars(env, sql, s);
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return rc == SQLITE_OK ? (jlong)(intptr_t)st : 0;
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}
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JNIEXPORT jint JNICALL Java_bench_SqliteJni_bindInt(JNIEnv *env, jclass c, jlong st, jint i, jint v) {
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return sqlite3_bind_int((sqlite3_stmt *)(intptr_t)st, i, v);
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}
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JNIEXPORT jint JNICALL Java_bench_SqliteJni_bindText(JNIEnv *env, jclass c, jlong st, jint i, jstring v) {
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const char *s = (*env)->GetStringUTFChars(env, v, NULL);
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int rc = sqlite3_bind_text((sqlite3_stmt *)(intptr_t)st, i, s, -1, SQLITE_TRANSIENT);
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(*env)->ReleaseStringUTFChars(env, v, s);
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return rc;
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}
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JNIEXPORT jint JNICALL Java_bench_SqliteJni_step(JNIEnv *env, jclass c, jlong st) {
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return sqlite3_step((sqlite3_stmt *)(intptr_t)st);
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}
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JNIEXPORT jint JNICALL Java_bench_SqliteJni_reset(JNIEnv *env, jclass c, jlong st) {
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return sqlite3_reset((sqlite3_stmt *)(intptr_t)st);
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}
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JNIEXPORT jint JNICALL Java_bench_SqliteJni_finalizeStmt(JNIEnv *env, jclass c, jlong st) {
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return sqlite3_finalize((sqlite3_stmt *)(intptr_t)st);
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}
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JNIEXPORT jint JNICALL Java_bench_SqliteJni_close(JNIEnv *env, jclass c, jlong db) {
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return sqlite3_close((sqlite3 *)(intptr_t)db);
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}
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