v.io/x/devtools/vmon: use lock to protect concurrent accesses to map

The map "aggs" was being modified concurrently by the statsWorker()
threads.  This caused crash:
	https://veyron.corp.google.com/jenkins/job/monitoring-cloud-syncbase/109367/console

This change introduces a mutex to fix it.

Change-Id: I1530c68131af162499ea97802efa32417a647266
1 file changed
tree: dcfbe6a93d399eec4d9860420e2f10c6b8df914b
  1. bendroid/
  2. dashboard/
  3. data/
  4. godepcop/
  5. gologcop/
  6. internal/
  7. jiri-api/
  8. jiri-contributors/
  9. jiri-copyright/
  10. jiri-dockergo/
  11. jiri-go/
  12. jiri-goext/
  13. jiri-oncall/
  14. jiri-profile-v23/
  15. jiri-run/
  16. jiri-swift/
  17. jiri-test/
  18. jiridoc/
  19. mailer/
  20. oncall/
  21. postsubmit/
  22. presubmit/
  23. tooldata/
  24. tracify/
  25. vbinary/
  26. vcloud/
  27. vjenkins/
  28. vkiosk/
  29. vmon/
  30. .gitignore
  31. .godepcop
  32. .jiriignore
  33. AUTHORS
  34. CONTRIBUTING.md
  35. CONTRIBUTORS
  36. LICENSE
  37. PATENTS
  38. README.md
  39. VERSION
README.md

This repository contains developer tools used to install and contribute to Vanadium.

For more information, see the installation and contributing instructions.

This repository is fetched and the tools are built as part of the Vanadium installation process for contributors.