Class: LibBPFRuby::Object

Inherits:
Object
  • Object
show all
Defined in:
ext/libbpf_ruby/libbpf_ruby.c

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Object 



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# File 'ext/libbpf_ruby/libbpf_ruby.c', line 260

static VALUE rb_cObject_initialize(VALUE self, VALUE path) {
  libbpf_ruby_object_t *libbpf_ruby_object;
  TypedData_Get_Struct(self, libbpf_ruby_object_t, &libbpf_ruby_object_type, libbpf_ruby_object);
  StringValueCStr(path);
  VALUE frozen_path = rb_str_new_frozen(path);

  nogvl_open_ctx_t open_ctx = { .path = RSTRING_PTR(frozen_path) };
  rb_nogvl(nogvl_bpf_object__open_file, &open_ctx, NULL, NULL, 0);
  long err = libbpf_get_error(open_ctx.bpf_object);
  if (err) {
    rb_raise(rb_eRuntimeError, "bpf_object__open_file failed: %s", strerror(-err));
  }

  nogvl_load_ctx_t load_ctx = { .bpf_object = open_ctx.bpf_object };
  rb_nogvl(nogvl_bpf_object__load, &load_ctx, NULL, NULL, 0);
  if (load_ctx.err) {
    rb_nogvl(nogvl_bpf_object__close, open_ctx.bpf_object, NULL, NULL, 0);
    rb_raise(rb_eRuntimeError, "bpf_object__load failed: %s", strerror(-load_ctx.err));
  }
  libbpf_ruby_object->bpf_object = open_ctx.bpf_object;
  return self;
}

Instance Method Details

#close ⇒ Object 



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# File 'ext/libbpf_ruby/libbpf_ruby.c', line 319

static VALUE rb_cObject_close(VALUE self) {
  libbpf_ruby_object_t *libbpf_ruby_object;
  TypedData_Get_Struct(self, libbpf_ruby_object_t, &libbpf_ruby_object_type, libbpf_ruby_object);
  if (libbpf_ruby_object->bpf_object) {
    rb_nogvl(nogvl_bpf_object__close, libbpf_ruby_object->bpf_object, NULL, NULL, 0);
    libbpf_ruby_object->bpf_object = NULL;
  }
  return Qnil;
}

#map_fd(name) ⇒ Object 



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# File 'ext/libbpf_ruby/libbpf_ruby.c', line 307

static VALUE rb_cObject_map_fd(VALUE self, VALUE name) {
  libbpf_ruby_object_t *libbpf_ruby_object;
  TypedData_Get_Struct(self, libbpf_ruby_object_t, &libbpf_ruby_object_type, libbpf_ruby_object);
  const char *name_str = StringValueCStr(name);

  int fd = bpf_object__find_map_fd_by_name(libbpf_ruby_object->bpf_object, name_str);
  if (fd < 0) {
    rb_raise(rb_eRuntimeError, "map %s not found", name_str);
  }
  return INT2NUM(fd);
}

#program(name) ⇒ Object 



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# File 'ext/libbpf_ruby/libbpf_ruby.c', line 283

static VALUE rb_cObject_program(VALUE self, VALUE name) {
  libbpf_ruby_object_t *libbpf_ruby_object;
  TypedData_Get_Struct(self, libbpf_ruby_object_t, &libbpf_ruby_object_type, libbpf_ruby_object);
  const char *name_str = StringValueCStr(name);

  struct bpf_program *program = bpf_object__find_program_by_name(libbpf_ruby_object->bpf_object, name_str);
  if (!program) {
    rb_raise(rb_eRuntimeError, "program %s not found", name_str);
  }
  return libbpf_ruby_program_wrap(self, program);
}

#program_fd(name) ⇒ Object 



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# File 'ext/libbpf_ruby/libbpf_ruby.c', line 295

static VALUE rb_cObject_program_fd(VALUE self, VALUE name) {
  libbpf_ruby_object_t *libbpf_ruby_object;
  TypedData_Get_Struct(self, libbpf_ruby_object_t, &libbpf_ruby_object_type, libbpf_ruby_object);
  const char *name_str = StringValueCStr(name);

  struct bpf_program *program = bpf_object__find_program_by_name(libbpf_ruby_object->bpf_object, name_str);
  if (!program) {
    rb_raise(rb_eRuntimeError, "program %s not found", name_str);
  }
  return INT2NUM(bpf_program__fd(program));
}