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88 lines
2.2 KiB
88 lines
2.2 KiB
#include "selfdrive/modeld/runners/onnxmodel.h"
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#include <csignal>
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#include <cstdio>
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#include <cstdlib>
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#include <poll.h>
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#include <unistd.h>
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#include "common/util.h"
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ONNXModel::ONNXModel(const std::string path, float *_output, size_t _output_size, int runtime, bool _use_tf8, cl_context context) {
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LOGD("loading model %s", path.c_str());
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output = _output;
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output_size = _output_size;
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use_tf8 = _use_tf8;
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int err = pipe(pipein);
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assert(err == 0);
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err = pipe(pipeout);
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assert(err == 0);
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std::string exe_dir = util::dir_name(util::readlink("/proc/self/exe"));
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std::string onnx_runner = exe_dir + "/runners/onnx_runner.py";
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std::string tf8_arg = use_tf8 ? "--use_tf8" : "";
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proc_pid = fork();
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if (proc_pid == 0) {
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LOGD("spawning onnx process %s", onnx_runner.c_str());
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char *argv[] = {(char*)onnx_runner.c_str(), (char*)path.c_str(), (char*)tf8_arg.c_str(), nullptr};
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dup2(pipein[0], 0);
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dup2(pipeout[1], 1);
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close(pipein[0]);
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close(pipein[1]);
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close(pipeout[0]);
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close(pipeout[1]);
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execvp(onnx_runner.c_str(), argv);
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}
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// parent
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close(pipein[0]);
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close(pipeout[1]);
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}
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ONNXModel::~ONNXModel() {
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close(pipein[1]);
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close(pipeout[0]);
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kill(proc_pid, SIGTERM);
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}
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void ONNXModel::pwrite(float *buf, int size) {
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char *cbuf = (char *)buf;
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int tw = size*sizeof(float);
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while (tw > 0) {
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int err = write(pipein[1], cbuf, tw);
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//printf("host write %d\n", err);
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assert(err >= 0);
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cbuf += err;
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tw -= err;
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}
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LOGD("host write of size %d done", size);
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}
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void ONNXModel::pread(float *buf, int size) {
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char *cbuf = (char *)buf;
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int tr = size*sizeof(float);
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struct pollfd fds[1];
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fds[0].fd = pipeout[0];
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fds[0].events = POLLIN;
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while (tr > 0) {
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int err;
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err = poll(fds, 1, 10000); // 10 second timeout
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assert(err == 1 || (err == -1 && errno == EINTR));
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LOGD("host read remaining %d/%d poll %d", tr, size*sizeof(float), err);
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err = read(pipeout[0], cbuf, tr);
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assert(err > 0 || (err == 0 && errno == EINTR));
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cbuf += err;
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tr -= err;
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}
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LOGD("host read done");
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}
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void ONNXModel::execute() {
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for (auto &input : inputs) {
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pwrite(input->buffer, input->size);
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}
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pread(output, output_size);
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}
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