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-rw-r--r--embedding_example/main.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/embedding_example/main.c b/embedding_example/main.c
new file mode 100644
index 0000000..8856d58
--- /dev/null
+++ b/embedding_example/main.c
@@ -0,0 +1,93 @@
+#include "lua.h"
+#include "lauxlib.h"
+#include "lualib.h"
+#include "matrix/matrix.h"
+#include "common.h"
+#include "luaT/luaT.h"
+#include <stdio.h>
+
+const char *nerv_matrix_host_float_tname = "nerv.MMatrixFloat";
+const char *input_name = "_nerv_embed_input";
+const char *output_name = "_nerv_embed_output";
+extern Matrix *nerv_matrix_host_float_create(long nrow, long ncol, Status *status);
+extern void nerv_matrix_host_float_data_retain(Matrix *self);
+extern void nerv_matrix_host_float_data_free(Matrix *self, Status *status);
+
+lua_State *L;
+Matrix *input, *output;
+Status status;
+
+void setup_nerv() {
+ L = lua_open();
+ luaL_openlibs(L);
+ luaL_loadfile(L, "setup_nerv.lua");
+ /* network configuration */
+ lua_pushstring(L, "../nerv/examples/swb_baseline.lua");
+ if (lua_pcall(L, 1, LUA_MULTRET, 0))
+ {
+ printf("%s\n", luaL_checkstring(L, 1));
+ exit(1);
+ }
+ /* lua stack now: input width, output width, propagator */
+ input = nerv_matrix_host_float_create(1, luaL_checkinteger(L, 1), &status);
+ NERV_LUA_CHECK_STATUS(L, status);
+ output = nerv_matrix_host_float_create(1, luaL_checkinteger(L, 2), &status);
+ NERV_LUA_CHECK_STATUS(L, status);
+ /* add reference to avoid gc */
+ luaT_pushudata(L, output, nerv_matrix_host_float_tname);
+ luaT_pushudata(L, input, nerv_matrix_host_float_tname);
+ lua_setfield(L, LUA_GLOBALSINDEX, input_name);
+ lua_setfield(L, LUA_GLOBALSINDEX, output_name);
+}
+
+
+void propagate(float for_fun) {
+ int i, j;
+ printf("ok: %d\n", lua_gettop(L));
+ lua_pushvalue(L, 3);
+ /* lua stack now: input width, output width, propagator, propagator */
+ for (i = 0; i < input->nrow; i++) /* nrow is actually 1 */
+ {
+ float *nerv_row = (float *)((char *)input->data.f + i * input->stride);
+ for (j = 0; j < input->ncol; j++)
+ {
+ nerv_row[j] = j * for_fun;
+ }
+ }
+ lua_getfield(L, LUA_GLOBALSINDEX, input_name);
+ lua_getfield(L, LUA_GLOBALSINDEX, output_name);
+ /* lua stack now: input width, output width, propagator, propagator, input, output */
+ if (lua_pcall(L, 2, 0, 0)) /* call propagator with two parameters */
+ {
+ printf("%s\n", luaL_checkstring(L, -1));
+ exit(-1);
+ }
+ /* lua stack now: input width, output width, propagator */
+ printf("## output: %ld %ld ##\n", output->nrow, output->ncol);
+ for (i = 0; i < output->nrow; i++) /* nrow is actually 1 */
+ {
+ float *nerv_row = (float *)((char *)output->data.f + i * output->stride);
+ for (j = 0; j < output->ncol; j++)
+ {
+ printf("%.8f ", nerv_row[j]);
+ }
+ }
+}
+
+void teardown_nerv() {
+ lua_pushnil(L);
+ lua_pushnil(L);
+ lua_setfield(L, LUA_GLOBALSINDEX, input_name);
+ lua_setfield(L, LUA_GLOBALSINDEX, output_name);
+ lua_gc(L, LUA_GCCOLLECT, 0);
+}
+
+int main() {
+ setup_nerv();
+ propagate(1.0);
+ propagate(2.0);
+ propagate(2.0);
+ propagate(3.0);
+ teardown_nerv();
+ return 0;
+}