From 06dc6a835bd8984c48fe7b00028d708194bf43d3 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Fri, 5 Sep 2014 01:37:06 +0200 Subject: implement c code for partition MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- src/libgamma_Partition.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 71 insertions(+), 3 deletions(-) (limited to 'src') diff --git a/src/libgamma_Partition.c b/src/libgamma_Partition.c index 4cb1cdc..65bf2e0 100644 --- a/src/libgamma_Partition.c +++ b/src/libgamma_Partition.c @@ -17,12 +17,53 @@ */ #include "libgamma_Partition.h" +#include +#include + #include #define J JNIEnv* env, jclass class +/** + * 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 partition state. @@ -33,7 +74,19 @@ * Element 1: The value for {@link #crtcs_available} * Element 2: Error code, zero on success. */ -jlongArray Java_libgamma_Partition_libgamma_1partition_1create(J, jlong site, jint partition); +jlongArray Java_libgamma_Partition_libgamma_1partition_1create(J, jlong site, jint partition) +{ + libgamma_partition_state_t* state = malloc(sizeof(libgamma_partition_state_t)); + void* super = (void*)(size_t)site; + int r; + if (state == NULL) + return fail(env, 0); + r = libgamma_partition_initialise(state, super, partition); + if (r != 0) + return fail(env, r); + return ok(env, state, state->crtcs_available); + (void) class; +} /** @@ -42,7 +95,13 @@ jlongArray Java_libgamma_Partition_libgamma_1partition_1create(J, jlong site, ji * * @param address The partition state. */ -void Java_libgamma_Partition_libgamma_1partition_1free(J, jlong address); +void Java_libgamma_Partition_libgamma_1partition_1free(J, jlong address) +{ + void* this = (void*)(size_t)address; + libgamma_partition_free(this); + (void) env; + (void) class; +} /** @@ -51,5 +110,14 @@ void Java_libgamma_Partition_libgamma_1partition_1free(J, jlong address); * @param address The partition state. * @return Zero on success, and error code on failure. */ -jint Java_libgamma_Partition_libgamma_1partition_1restore(J, jlong address); +jint Java_libgamma_Partition_libgamma_1partition_1restore(J, jlong address) +{ + void* this = (void*)(size_t)address; + int r = libgamma_partition_restore(this); + if (r != 0) + return r == LIBGAMMA_ERRNO_SET ? errno : r; + return 0; + (void) env; + (void) class; +} -- cgit v1.2.3-70-g09d2