pw_rpc: ChannelOutput buffer handling fixes

- Ensure ChannelOutput buffers are always released when a call is
  closed.
  * Release any held buffer when aborting a server call due to an error.
  * Permit calling AcquirePayloadBuffer() on an inactive call, but
    return an empty buffer if it is called while inactive. Previously,
    this was disallowed, but it may not be possible to prevent an
    accidental AcquirePayloadBuffer() on a closed call if it is closed
    by a different thread.
  * Release any held buffer when a client call goes out of scope or is
    aborted.
- Extend locking annotations to cover setting callbacks.
- Expose the function to end client streams as CloseClientStream().

Change-Id: I892c66bbeb1701329783b8c360d02ffe25992d98
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/78622
Reviewed-by: Alexei Frolov <frolv@google.com>
Commit-Queue: Wyatt Hepler <hepler@google.com>
16 files changed
tree: 8dfae073e03e0185605758a8a4a001182e5d9c42
  1. build_overrides/
  2. docker/
  3. docs/
  4. pw_allocator/
  5. pw_analog/
  6. pw_android_toolchain/
  7. pw_arduino_build/
  8. pw_assert/
  9. pw_assert_basic/
  10. pw_assert_log/
  11. pw_assert_zephyr/
  12. pw_base64/
  13. pw_bloat/
  14. pw_blob_store/
  15. pw_bluetooth_hci/
  16. pw_boot/
  17. pw_boot_cortex_m/
  18. pw_build/
  19. pw_build_info/
  20. pw_build_mcuxpresso/
  21. pw_bytes/
  22. pw_checksum/
  23. pw_chrono/
  24. pw_chrono_embos/
  25. pw_chrono_freertos/
  26. pw_chrono_stl/
  27. pw_chrono_threadx/
  28. pw_chrono_zephyr/
  29. pw_cli/
  30. pw_console/
  31. pw_containers/
  32. pw_cpu_exception/
  33. pw_cpu_exception_cortex_m/
  34. pw_crypto/
  35. pw_docgen/
  36. pw_doctor/
  37. pw_env_setup/
  38. pw_file/
  39. pw_function/
  40. pw_fuzzer/
  41. pw_hdlc/
  42. pw_hex_dump/
  43. pw_i2c/
  44. pw_interrupt/
  45. pw_interrupt_cortex_m/
  46. pw_interrupt_zephyr/
  47. pw_kvs/
  48. pw_libc/
  49. pw_log/
  50. pw_log_basic/
  51. pw_log_null/
  52. pw_log_rpc/
  53. pw_log_tokenized/
  54. pw_log_zephyr/
  55. pw_malloc/
  56. pw_malloc_freelist/
  57. pw_metric/
  58. pw_minimal_cpp_stdlib/
  59. pw_module/
  60. pw_multisink/
  61. pw_package/
  62. pw_persistent_ram/
  63. pw_polyfill/
  64. pw_preprocessor/
  65. pw_presubmit/
  66. pw_protobuf/
  67. pw_protobuf_compiler/
  68. pw_random/
  69. pw_result/
  70. pw_ring_buffer/
  71. pw_router/
  72. pw_rpc/
  73. pw_snapshot/
  74. pw_software_update/
  75. pw_span/
  76. pw_spi/
  77. pw_status/
  78. pw_stm32cube_build/
  79. pw_stream/
  80. pw_string/
  81. pw_symbolizer/
  82. pw_sync/
  83. pw_sync_baremetal/
  84. pw_sync_embos/
  85. pw_sync_freertos/
  86. pw_sync_stl/
  87. pw_sync_threadx/
  88. pw_sync_zephyr/
  89. pw_sys_io/
  90. pw_sys_io_arduino/
  91. pw_sys_io_baremetal_lm3s6965evb/
  92. pw_sys_io_baremetal_stm32f429/
  93. pw_sys_io_mcuxpresso/
  94. pw_sys_io_stdio/
  95. pw_sys_io_stm32cube/
  96. pw_sys_io_zephyr/
  97. pw_system/
  98. pw_target_runner/
  99. pw_thread/
  100. pw_thread_embos/
  101. pw_thread_freertos/
  102. pw_thread_stl/
  103. pw_thread_threadx/
  104. pw_tls_client/
  105. pw_tls_client_boringssl/
  106. pw_tls_client_mbedtls/
  107. pw_tokenizer/
  108. pw_tool/
  109. pw_toolchain/
  110. pw_trace/
  111. pw_trace_tokenized/
  112. pw_transfer/
  113. pw_unit_test/
  114. pw_varint/
  115. pw_watch/
  116. pw_web_ui/
  117. pw_work_queue/
  118. targets/
  119. third_party/
  120. zephyr/
  121. .bazelignore
  122. .bazelrc
  123. .clang-format
  124. .clang-tidy
  125. .eslintrc.json
  126. .gitattributes
  127. .gitignore
  128. .gn
  129. .prettierrc.js
  130. .pylintrc
  131. activate.bat
  132. Android.bp
  133. AUTHORS
  134. bootstrap.bat
  135. bootstrap.sh
  136. BUILD.bazel
  137. BUILD.gn
  138. BUILDCONFIG.gn
  139. CMakeLists.txt
  140. Kconfig.zephyr
  141. LICENSE
  142. modules.gni
  143. OWNERS
  144. package.json
  145. PW_PLUGINS
  146. README.md
  147. tsconfig.json
  148. WORKSPACE
  149. yarn.lock
README.md

Pigweed

Pigweed is an open source collection of embedded-targeted libraries–or as we like to call them, modules. These modules are building blocks and infrastructure that enable faster and more reliable development on small-footprint MMU-less 32-bit microcontrollers like the STMicroelectronics STM32L452 or the Nordic nRF52832.

For more information please see our website: https://pigweed.dev/

Links