diff options
Diffstat (limited to 'services/audioflinger/FastThreadDumpState.h')
| -rw-r--r-- | services/audioflinger/FastThreadDumpState.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/services/audioflinger/FastThreadDumpState.h b/services/audioflinger/FastThreadDumpState.h index 17afbe5..bbca7da 100644 --- a/services/audioflinger/FastThreadDumpState.h +++ b/services/audioflinger/FastThreadDumpState.h @@ -33,12 +33,15 @@ struct FastThreadDumpState { struct timespec mMeasuredWarmupTs; // measured warmup time uint32_t mWarmupCycles; // number of loop cycles required to warmup -#ifdef FAST_MIXER_STATISTICS +#ifdef FAST_THREAD_STATISTICS // Recently collected samples of per-cycle monotonic time, thread CPU time, and CPU frequency. // kSamplingN is max size of sampling frame (statistics), and must be a power of 2 <= 0x8000. // The sample arrays are virtually allocated based on this compile-time constant, // but are only initialized and used based on the runtime parameter mSamplingN. static const uint32_t kSamplingN = 0x8000; + // Compile-time constant for a "low RAM device", must be a power of 2 <= kSamplingN. + // This value was chosen such that each array uses 1 small page (4 Kbytes). + static const uint32_t kSamplingNforLowRamDevice = 0x400; // Corresponding runtime maximum size of sample arrays, must be a power of 2 <= kSamplingN. uint32_t mSamplingN; // The bounds define the interval of valid samples, and are represented as follows: @@ -52,6 +55,9 @@ struct FastThreadDumpState { #ifdef CPU_FREQUENCY_STATISTICS uint32_t mCpukHz[kSamplingN]; // absolute CPU clock frequency in kHz, bits 0-3 are CPU# #endif + + // Increase sampling window after construction, must be a power of 2 <= kSamplingN + void increaseSamplingN(uint32_t samplingN); #endif }; // struct FastThreadDumpState |