commit | 5dec82fe7edd5b54a76cd7db9c1b8fa832e5db9a | [log] [tgz] |
---|---|---|
author | Steven Moreland <smoreland@google.com> | Wed Oct 10 13:33:29 2018 -0700 |
committer | Steven Moreland <smoreland@google.com> | Thu Oct 11 14:22:51 2018 -0700 |
tree | 9c958ec7089ff67feaadd4850146b3d45d516658 | |
parent | 967c243980ce06d7720c753013e52883c267e356 [diff] |
safe_union: disallow zero/single member unions. These can't be passed between processes and aren't useful (the bare type should be used instead). It's needed to disallow zero member unions in order to have a default value for hidl_o. Bug: 116156870 Test: hidl_error_test, hidl_test, hidl_java_test Change-Id: I4cbdfa848e774d3a5efe6f63636bdbda9eec78f2
Full documentation can be found here: https://source.android.com/devices/architecture/hidl/
hidl-gen is a compiler for the HIDL (HAL Interface Design Language) which generates C++ and Java endpoints for RPC mechanisms. The main userspace libraries which this compiler uses can be found at system/libhidl.
m hidl-gen
Note that options for hidl-gen expected to be invoked by the build system are marked with ‘internal’ in the help menu.
hidl-gen -h hidl-gen -o output -L c++-impl -r android.hardware:hardware/interfaces -r android.hidl:system/libhidl/transport android.hardware.nfc@1.0
Some defaults for package roots are also provided
hidl-gen -o output -L c++-impl android.hardware.nfc@1.0 hidl-gen -o output -L vts android.hardware.nfc@1.0 hidl-gen -L hash android.hardware.nfc@1.0
Example command for vendor project
hidl-gen -L c++-impl -r vendor.foo:vendor/foo/interfaces vendor.foo.nfc@1.0
See update-makefiles-helper.sh and update-all-google-makefiles.sh for examples of how to generate HIDL makefiles (using the -Landroidbp option).
This is a helper tool to convert C headers to valid .hal files.
m c2hal && c2hal -h
This tool generates html documentation for hal interfaces.
m hidl-doc && hidl-doc -h