Add AttachTracepoints() which will be used later for proc_exit tracepoint

Test Plan: Added API is not used yet, tests will be added later.

Reviewers: #stirling, oazizi

Reviewed By: #stirling, oazizi

Subscribers: oazizi
Signed-off-by: yzhao1012 <yzhao@pixielabs.ai>

Differential Revision: https://phab.corp.pixielabs.ai/D10860

GitOrigin-RevId: 48735bc353e40767345032b8fe52f110b4e3dc39

src/stirling/bpf_tools/bcc_wrapper.cc

@@ -232,6 +232,13 @@ Status BCCWrapper::AttachKProbes(const ArrayView<KProbeSpec>& probes) {
   return Status::OK();
 }
 
+Status BCCWrapper::AttachTracepoints(const ArrayView<TracepointSpec>& probes) {
+  for (const TracepointSpec& spec : probes) {
+    PL_RETURN_IF_ERROR(AttachTracepoint(spec));
+  }
+  return Status::OK();
+}
+
 Status BCCWrapper::AttachUProbes(const ArrayView<UProbeSpec>& probes) {
   for (const UProbeSpec& p : probes) {
     PL_RETURN_IF_ERROR(AttachUProbe(p));

src/stirling/bpf_tools/bcc_wrapper.h

@@ -282,6 +282,13 @@ class BCCWrapper {
    */
   Status AttachKProbes(const ArrayView<KProbeSpec>& probes);
 
+  /**
+   * Convenience function that attaches multiple tracepoints.
+   * @param probes Vector of TracepointSpec.
+   * @return Error of first probe to fail to attach (remaining probe attachments are not attempted).
+   */
+  Status AttachTracepoints(const ArrayView<TracepointSpec>& probes);
+
   /**
    * Convenience function that attaches multiple uprobes.
    * @param probes Vector of probes.