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authorAndrew Yourtchenko <ayourtch@gmail.com>2016-11-25 13:29:30 +0000
committerDamjan Marion <dmarion.lists@gmail.com>2016-11-28 11:55:34 +0000
commit985f3d11fae7f93eb9a9e96d59b8e7a066819672 (patch)
treed44d3888ca6118384d7ea79b85411aa0b8539b5c /vpp-api/lua/cough.c
parent085f5c00661ef00a038d3d54be7be6dafd0a6d89 (diff)
Clean up the Lua API, make it luajit-only, no C
This removes the libcough which was a temporary layer atop the libpneum to make it synchronous. Now Lua API only requres luajit, and has no dependencies on compiling any C. Also comment out a couple of debug print functions. Change-Id: I35fd1c8088c6fd1b10b9e4d903ad241ab32fd91a Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
Diffstat (limited to 'vpp-api/lua/cough.c')
-rw-r--r--vpp-api/lua/cough.c183
1 files changed, 0 insertions, 183 deletions
diff --git a/vpp-api/lua/cough.c b/vpp-api/lua/cough.c
deleted file mode 100644
index 4251c732202..00000000000
--- a/vpp-api/lua/cough.c
+++ /dev/null
@@ -1,183 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/*
- * This is a temporary helper library to seamlessly run against
- * the current API as exposed by libpneum.
- * In the future once the sync API is exposed as well as
- * a way to free the received data, this can go away.
- */
-
-#include <dlfcn.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <pthread.h>
-
-pthread_mutex_t mut;
-pthread_mutex_t *cb_lock = &mut;
-
-void *pneum_handle = NULL;
-
-typedef void* (*arbitrary)();
-
-int (*orig_pneum_connect)(char *name, char *chroot_prefix) = NULL;
-int (*orig_pneum_connect_sync)(char *name, char *chroot_prefix) = NULL;
-int (*orig_pneum_disconnect)(void) = NULL;
-int (*orig_pneum_read)(char **data, int *l) = NULL;
-int (*orig_pneum_write)(char *data, int len) = NULL;
-int (*orig_pneum_has_data)(void) = NULL;
-int (*orig_pneum_data_free)(char *data) = NULL;
-
-arbitrary my_function = NULL;
-
-typedef uint8_t u8;
-typedef uint32_t u32;
-
-u8 *cough_read_buffer;
-u32 cough_read_buffer_size = 1000000;
-u32 cough_read_head = 0;
-u32 cough_read_lock_start = 0; /* lock_start till head is busy memory */
-u32 cough_read_tail = 0;
-
-
-int wrap_pneum_callback(char *data, int len) {
- // printf("Cough callback! with %d bytes\n", len);
- pthread_mutex_lock(cb_lock);
- if(cough_read_lock_start == cough_read_head) {
- // printf("Reset read head!\n");
- cough_read_head = 0;
- cough_read_tail = 0;
- cough_read_lock_start = 0;
- }
- u32 store_len = len;
- memcpy(cough_read_buffer + cough_read_head, &store_len, sizeof(u32));
- cough_read_head += sizeof(u32);
- memcpy(cough_read_buffer + cough_read_head, data, len);
- cough_read_head += len;
- pthread_mutex_unlock(cb_lock);
- return len;
-}
-
-int cough_pneum_attach(char *pneum_fname, char *cough_fname) {
- /* this is needed to make the pneum aware of the wrap_pneum_callback */
- pneum_handle = dlopen(cough_fname, RTLD_NOW|RTLD_GLOBAL);
- /* now let's try to load pneum itself */
- pneum_handle = dlopen(pneum_fname, RTLD_NOW|RTLD_GLOBAL);
- if (pneum_handle) {
- *(void**)(&orig_pneum_connect) = dlsym(pneum_handle,"pneum_connect");
- *(void**)(&orig_pneum_connect_sync) = dlsym(pneum_handle,"pneum_connect_sync");
- *(void**)(&orig_pneum_disconnect) = dlsym(pneum_handle,"pneum_disconnect");
- *(void**)(&orig_pneum_read) = dlsym(pneum_handle,"pneum_read");
- *(void**)(&orig_pneum_write) = dlsym(pneum_handle,"pneum_write");
- *(void**)(&orig_pneum_has_data) = dlsym(pneum_handle,"pneum_has_data");
- *(void**)(&orig_pneum_data_free) = dlsym(pneum_handle,"pneum_data_free");
- // If you uncomment the below line we pretend we have an async-only libpneum
- orig_pneum_connect_sync = NULL;
- cough_read_buffer = malloc(cough_read_buffer_size);
- } else {
- printf("Could not get cough handle\n");
- printf("Error: %s", dlerror());
- return -1;
- }
-
- *(void**)(&my_function) = dlsym(pneum_handle,"something");
-}
-
-
-int pneum_connect(char *name, char *chroot_prefix) {
- if(orig_pneum_connect) {
- return(orig_pneum_connect(name, chroot_prefix));
- } else {
- printf("COUGH: pneum_connect\n");
- return -1;
- }
-}
-int pneum_connect_sync(char *name, char *chroot_prefix) {
- if(orig_pneum_connect_sync) {
- int ret = (orig_pneum_connect_sync(name, chroot_prefix));
- return ret;
- } else {
- return(orig_pneum_connect(name, chroot_prefix));
- }
-}
-
-
-int pneum_disconnect(void) {
- if(orig_pneum_disconnect) {
- return orig_pneum_disconnect();
- } else {
- printf("COUGH: pneum_disconnect\n");
- return -1;
- }
-}
-
-int pneum_has_data(void) {
- if (orig_pneum_connect_sync) {
- /* always return 1 in a pass-through case */
- return 1;
- } else {
- // printf("COUGH: pneum_has_data\n");
- return (cough_read_head != cough_read_tail);
- }
-}
-
-
-int pneum_read(char **data, int *l) {
- if(orig_pneum_connect_sync) {
- return orig_pneum_read(data, l);
- } else {
- while(!pneum_has_data());
- u32 n_bytes;
- pthread_mutex_lock(cb_lock);
- memcpy(&n_bytes, cough_read_buffer + cough_read_tail, sizeof(u32));
- cough_read_tail += sizeof(u32);
- void * dataptr = (void *) (cough_read_buffer + cough_read_tail);
- *data = dataptr;
- cough_read_tail += n_bytes;
- *l = n_bytes;
- pthread_mutex_unlock(cb_lock);
- return n_bytes;
- }
-}
-
-int pneum_write(char *data, int len) {
- if(orig_pneum_write) {
- return(orig_pneum_write(data, len));
- } else {
- printf("COUGH: pneum_write\n");
- return -1;
- }
-}
-
-void pneum_data_free(char *data) {
- if (orig_pneum_connect_sync) {
- if(orig_pneum_data_free) {
- orig_pneum_data_free(data);
- } else {
- printf("COUGH: pneum_data_free\n");
- }
- } else {
- u32 *len;
- uint32_t index = ((u8*)data) - cough_read_buffer;
- pthread_mutex_lock(cb_lock);
- if ((index < cough_read_head) && (index > cough_read_lock_start)) {
- len = (void *)(data - sizeof(u32));
- cough_read_lock_start = index + *len;
- }
- pthread_mutex_unlock(cb_lock);
- }
-}