diff options
| -rw-r--r-- | src/libgamma_Site.c | 94 |
1 files changed, 91 insertions, 3 deletions
diff --git a/src/libgamma_Site.c b/src/libgamma_Site.c index 269b32c..2b227d9 100644 --- a/src/libgamma_Site.c +++ b/src/libgamma_Site.c @@ -17,6 +17,10 @@ */ #include "libgamma_Site.h" +#include <stdlib.h> +#include <string.h> +#include <errno.h> + #include <libgamma.h> @@ -25,6 +29,45 @@ /** + * Make a failure-return. + * + * @param error_code The error code returned from the failing function or zero to read `errno`. + * @return The object to return. + */ +static jlongArray fail(JNIEnv* env, int error_code) +{ + jlongArray rc = (*env)->NewLongArray(env, 3); + jlong e, z = 0; + if ((error_code == LIBGAMMA_ERRNO_SET) || !error_code) + error_code = errno; + e = (jlong)error_code; + (*env)->SetLongArrayRegion(env, rc, 0, 1, &z); + (*env)->SetLongArrayRegion(env, rc, 1, 1, &z); + (*env)->SetLongArrayRegion(env, rc, 2, 1, &e); + return rc; +} + + +/** + * Make a success-return. + * + * @param state The native object. + * @param count The subelement count. + * @return The object to return. + */ +static jlongArray ok(JNIEnv* env, void* state, size_t count) +{ + jlong a = (jlong)(size_t)state; + jlong b = (jlong)count, z = 0; + jlongArray rc = (*env)->NewLongArray(env, 3); + (*env)->SetLongArrayRegion(env, rc, 0, 1, &a); + (*env)->SetLongArrayRegion(env, rc, 1, 1, &b); + (*env)->SetLongArrayRegion(env, rc, 2, 1, &z); + return rc; +} + + +/** * Create a site state. * * @param method The adjustment method (display server and protocol.) @@ -33,7 +76,37 @@ * Element 1: The value for {@link #partitions_available} * Element 2: Error code, zero on success. */ -jlongArray Java_libgamma_Site_libgamma_1site_1create(J, jint method, jstring site); +jlongArray Java_libgamma_Site_libgamma_1site_1create(J, jint method, jstring site) +{ + libgamma_site_state_t* state = malloc(sizeof(libgamma_site_state_t)); + const char* site_chars; + char* site_; + int r; + if (site != NULL) + { + int saved_errno = 0; + size_t n; + site_chars = (*env)->GetStringUTFChars(env, site, NULL); + n = strlen(site_chars) + 1; + site_ = malloc(n * sizeof(char)); + if (site_ == NULL) + saved_errno = errno; + else + memcpy(site_, site_chars, n * sizeof(char)); + (*env)->ReleaseStringUTFChars(env, site, site_chars); + if (saved_errno) + return fail(env, errno); + } + else + site_ = NULL; + if (state == NULL) + return fail(env, 0); + r = libgamma_site_initialise(state, method, site_); + if (r != 0) + return fail(env, r); + return ok(env, state, state->partitions_available); + (void) class; +} /** @@ -42,7 +115,13 @@ jlongArray Java_libgamma_Site_libgamma_1site_1create(J, jint method, jstring sit * * @param address The site state. */ -void Java_libgamma_Site_libgamma_1site_1free(J, jlong address); +void Java_libgamma_Site_libgamma_1site_1free(J, jlong address) +{ + void* this = (void*)(size_t)address; + libgamma_site_free(this); + (void) env; + (void) class; +} /** @@ -51,5 +130,14 @@ void Java_libgamma_Site_libgamma_1site_1free(J, jlong address); * @param address The site state. * @return Zero on success, and error code on failure. */ -jint Java_libgamma_Site_libgamma_1site_1restore(J, jlong address); +jint Java_libgamma_Site_libgamma_1site_1restore(J, jlong address) +{ + void* this = (void*)(size_t)address; + int r = libgamma_site_restore(this); + if (r != 0) + return r == LIBGAMMA_ERRNO_SET ? errno : r; + return 0; + (void) env; + (void) class; +} |