diff options
Diffstat (limited to 'en/devices/architecture/hidl-cpp')
| -rw-r--r-- | en/devices/architecture/hidl-cpp/index.html | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/en/devices/architecture/hidl-cpp/index.html b/en/devices/architecture/hidl-cpp/index.html index 28c4aa0a..15098178 100644 --- a/en/devices/architecture/hidl-cpp/index.html +++ b/en/devices/architecture/hidl-cpp/index.html @@ -83,7 +83,7 @@ HAL files and is a good reference). When transferring over HALs from <pre class="prettyprint"> PACKAGE=android.hardware.nfc@1.0 LOC=hardware/interfaces/nfc/1.0/default/ -make hidl-gen -j64 +m -j hidl-gen hidl-gen -o $LOC -Lc++-impl -randroid.hardware:hardware/interfaces \ -randroid.hidl:system/libhidl/transport $PACKAGE hidl-gen -o $LOC -Landroidbp-impl -randroid.hardware:hardware/interfaces \ @@ -117,19 +117,29 @@ a binderized service. Example daemon code (for pure binderized service):</p> <pre class="prettyprint"> int main(int /* argc */, char* /* argv */ []) { + // This function must be called before you join to ensure the proper + // number of threads are created. The threadpool will never exceed + // size one because of this call. + ::android::hardware::configureRpcThreadpool(1 /*threads*/, true /*willJoin*/); + sp<INfc> nfc = new Nfc(); const status_t status = nfc->registerAsService(); if (status != ::android::OK) { return 1; // or handle error } - // join pool or do other things + + // Adds this thread to the threadpool, resulting in one total + // thread in the threadpool. We could also do other things, but + // would have to specify 'false' to willJoin in configureRpcThreadpool. + ::android::hardware::joinRpcThreadpool(); + return 1; // joinRpcThreadpool should never return } </pre> -<p>This daemon should live in <code>$PACKAGE + "-service"</code> (for example, -<code>android.hardware.nfc@1.0-service</code>). The -<a href="/security/selinux/device-policy.html">sepolicy</a> for a specific class -of HALs is the attribute <code>hal_<module></code> (for instance, +<p>This daemon usually lives in <code>$PACKAGE + "-service-suffix"</code> (for +example, <code>android.hardware.nfc@1.0-service</code>), but it could be anywhere. +The <a href="/security/selinux/device-policy.html">sepolicy</a> for a specific +class of HALs is the attribute <code>hal_<module></code> (for instance, <code>hal_nfc)</code>. This attribute must be applied to the daemon that runs a particular HAL (if the same process serves multiple HALs, multiple attributes can be applied to it).</p> |