{"id":110,"date":"2011-08-11T19:21:28","date_gmt":"2011-08-11T18:21:28","guid":{"rendered":"http:\/\/zsteva.info\/?p=110"},"modified":"2011-08-11T19:21:47","modified_gmt":"2011-08-11T18:21:47","slug":"named-pipea-fifo-na-androidu","status":"publish","type":"post","link":"http:\/\/zsteva.info\/blog\/2011\/08\/named-pipea-fifo-na-androidu\/","title":{"rendered":"Named pipea (fifo) na androidu"},"content":{"rendered":"<p>Posto mkfifo() poziv nije dostupan iz java-e na androidu (ili barem meni nije poznato kako). Postoje dva re\u0161enja: pozivanje externe mkfifo komande ili pravljenje C biblioteke koja poziva funkciju i linkovati sa javom (JNI). Drugi na\u010din je elegantniji i ali komplikovanije re\u0161enje.<\/p>\n<p><strong>jni\/Android.mk<\/strong>:<br \/>\n<code><br \/>\nLOCAL_PATH := $(call my-dir)<\/p>\n<p>include $(CLEAR_VARS)<\/p>\n<p>TARGET_PLATFORM := android-3<br \/>\nLOCAL_MODULE    := mkfifo<br \/>\nLOCAL_SRC_FILES := mkfifo.c<br \/>\nLOCAL_LDLIBS    := -llog<\/p>\n<p>include $(BUILD_SHARED_LIBRARY)<br \/>\n<\/code><\/p>\n<p><strong>jni\/mkfifo.c<\/strong>:<br \/>\n<code><br \/>\n#include &lt;string.h><br \/>\n#include &lt;jni.h><br \/>\n#include &lt;unistd.h><br \/>\n#include &lt;sys\/types.h><br \/>\n#include &lt;stdio.h><br \/>\n#include &lt;unistd.h><br \/>\n#include &lt;sys\/stat.h><\/p>\n<p>JNIEXPORT jint JNICALL<br \/>\nJava_info_zsteva_fifo_mkfifo( JNIEnv* env, jobject thiz, jstring path )<br \/>\n{<br \/>\n\tjboolean iscopy;<br \/>\n\tconst char *path_utf = (*env)->GetStringUTFChars(env, path, &iscopy);<\/p>\n<p>\tint ret = mkfifo(path_utf, 0700);<\/p>\n<p>\t(*env)->ReleaseStringUTFChars(env, path, path_utf);<\/p>\n<p>\treturn ret;<br \/>\n}<\/p>\n<p><\/code><\/p>\n<p><strong>src\/info\/zsteva\/mkfifo.java<\/strong>:<br \/>\n<code><br \/>\npackage info.zsteva;<\/p>\n<p>public class fifo {<br \/>\n\t\/\/ JNI<br \/>\n    public native static int mkfifo(String path);<br \/>\n    static {<br \/>\n            System.loadLibrary(\"mkfifo\");<br \/>\n    }<br \/>\n}<br \/>\n<\/code><\/p>\n<p>Smestiti fajlove na adekvatna mesta i u rootu android projekta pokrenuti ndk-build (za kompajliranje je potreban android-ndk-sdk).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Posto mkfifo() poziv nije dostupan iz java-e na androidu (ili barem meni nije poznato kako). Postoje dva re\u0161enja: pozivanje externe mkfifo komande ili pravljenje C biblioteke koja poziva funkciju i linkovati sa javom (JNI). Drugi na\u010din je elegantniji i ali &hellip; <a href=\"http:\/\/zsteva.info\/blog\/2011\/08\/named-pipea-fifo-na-androidu\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[134,47,46,44,43,45],"_links":{"self":[{"href":"http:\/\/zsteva.info\/blog\/wp-json\/wp\/v2\/posts\/110"}],"collection":[{"href":"http:\/\/zsteva.info\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/zsteva.info\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/zsteva.info\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/zsteva.info\/blog\/wp-json\/wp\/v2\/comments?post=110"}],"version-history":[{"count":9,"href":"http:\/\/zsteva.info\/blog\/wp-json\/wp\/v2\/posts\/110\/revisions"}],"predecessor-version":[{"id":119,"href":"http:\/\/zsteva.info\/blog\/wp-json\/wp\/v2\/posts\/110\/revisions\/119"}],"wp:attachment":[{"href":"http:\/\/zsteva.info\/blog\/wp-json\/wp\/v2\/media?parent=110"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/zsteva.info\/blog\/wp-json\/wp\/v2\/categories?post=110"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/zsteva.info\/blog\/wp-json\/wp\/v2\/tags?post=110"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}