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local_time_hw_device Yapı Referansı
#include <
local_time_hal.h
>
Tanım,
local_time_hal.h
dosyasının
57. satırı
içindedir.
Laboratuvar ortamlarında düşük düzey senkronizasyon verilerini toplamak için kullanılan bir yöntem. Çoğu HAL uygulaması bu üyeyi NULL olarak ayarlar veya bu işlevin desteklenmediğini belirtmek için -EINVAL döndürür. Üretim HAL'leri bu yöntemi hiçbir zaman desteklememelidir.
Tanımı,
local_time_hal.h
dosyasının
98
satırı.
Sistem genelindeki yerel saat sayıcısının nominal frekansını (hertz cinsinden) döndürür
Tanımı,
local_time_hal.h
dosyasının
77
satırı
Sistem genelinde yerel saat sayacını çalıştıran osilatörün donanım kaydırma hızını ayarlar. Başarılı olduğunda platformlar 0 değerini döndürmelidir. HW slew'u desteklemeyen platformlar bu yöntemi NULL olarak ayarlamalıdır.
Geçerli değerler, MIN_INT16 ile MAX_INT16 arasındadır. Platform uygulamaları bu aralığı, donanımlarının minimum/maksimum dönüş hızıyla doğrusal olarak eşlemeye çalışmalıdır.
Tanımı,
local_time_hal.h
dosyasının
89
satırı
Bu yapının dokümanları aşağıdaki dosyadan oluşturulmuştur:
Bu sayfadaki içerik ve kod örnekleri, İçerik Lisansı sayfasında açıklanan lisanslara tabidir. Java ve OpenJDK, Oracle ve/veya satış ortaklarının tescilli ticari markasıdır.
Son güncelleme tarihi: 2025-07-27 UTC.
[[["Anlaması kolay","easyToUnderstand","thumb-up"],["Sorunumu çözdü","solvedMyProblem","thumb-up"],["Diğer","otherUp","thumb-up"]],[["İhtiyacım olan bilgiler yok","missingTheInformationINeed","thumb-down"],["Çok karmaşık / çok fazla adım var","tooComplicatedTooManySteps","thumb-down"],["Güncel değil","outOfDate","thumb-down"],["Çeviri sorunu","translationIssue","thumb-down"],["Örnek veya kod sorunu","samplesCodeIssue","thumb-down"],["Diğer","otherDown","thumb-down"]],["Son güncelleme tarihi: 2025-07-27 UTC."],[],[],null,["# Android Hardware Abstraction Layer: local_time_hw_device Struct Reference\n\nlocal_time_hw_device Struct Reference\n=====================================\n\n[Data Fields](#pub-attribs) \nlocal_time_hw_device Struct Reference \n\n`\n#include \u003c\n`[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)`\n\u003e\n`\n\n|----------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| Data Fields ----------- ||\n| struct [hw_device_t](/reference/hal/structhw__device__t) | [common](/reference/hal/structlocal__time__hw__device#a86a0ca82dd3f02023e259b8b5e155dbe) |\n| ||\n| int64_t(\\* | [get_local_time](/reference/hal/structlocal__time__hw__device#aa2fced6a37dbd2b5f72c8148a52c611a) )(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev) |\n| ||\n| uint64_t(\\* | [get_local_freq](/reference/hal/structlocal__time__hw__device#a761e4dab7f805e4a1810a2214aabb2f3) )(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev) |\n| ||\n| int(\\* | [set_local_slew](/reference/hal/structlocal__time__hw__device#af05541302faa15c0eb8a04c0765297b0) )(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev, int16_t rate) |\n| ||\n| int(\\* | [get_debug_log](/reference/hal/structlocal__time__hw__device#a3c571551268d4ba712c129ac665d0ff5) )(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev, struct [local_time_debug_event](/reference/hal/structlocal__time__debug__event) \\*records, int max_records) |\n| ||\n\n\nDetailed Description\n--------------------\n\n\nDefinition at line\n[57](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\nof file\n[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\n.\n\nField Documentation\n-------------------\n\n\n|-----------------------------------------------------------------|\n| struct [hw_device_t](/reference/hal/structhw__device__t) common |\n\n\nCommon methods of the local time hardware device. This\n*must*\nbe the first member of\n[local_time_hw_device](/reference/hal/structlocal__time__hw__device)\nas users of this structure will cast a\n[hw_device_t](/reference/hal/structhw__device__t)\nto\n[local_time_hw_device](/reference/hal/structlocal__time__hw__device)\npointer in contexts where it's known the\n[hw_device_t](/reference/hal/structhw__device__t)\nreferences a\n[local_time_hw_device](/reference/hal/structlocal__time__hw__device)\n.\n\n\nDefinition at line\n[64](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\nof file\n[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\n.\n\n|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| int(\\* get_debug_log)(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev, struct [local_time_debug_event](/reference/hal/structlocal__time__debug__event) \\*records, int max_records) |\n\n\nA method used to collect low level sync data in a lab environments. Most HAL implementations will simply set this member to NULL, or return -EINVAL to indicate that this functionality is not supported. Production HALs should never support this method.\n\n\nDefinition at line\n[98](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\nof file\n[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\n.\n\n|----------------------------------------------------------------------------------------------------------------|\n| uint64_t(\\* get_local_freq)(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev) |\n\n\nReturns the nominal frequency (in hertz) of the system wide local time counter\n\n\nDefinition at line\n[77](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\nof file\n[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\n.\n\n|---------------------------------------------------------------------------------------------------------------|\n| int64_t(\\* get_local_time)(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev) |\n\n\nReturns the current value of the system wide local time counter\n\n\nDefinition at line\n[70](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\nof file\n[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\n.\n\n|-------------------------------------------------------------------------------------------------------------------------|\n| int(\\* set_local_slew)(struct [local_time_hw_device](/reference/hal/structlocal__time__hw__device) \\*dev, int16_t rate) |\n\n\nSets the HW slew rate of oscillator which drives the system wide local time counter. On success, platforms should return 0. Platforms which do not support HW slew should leave this method set to NULL.\n\n\nValid values for rate range from MIN_INT16 to MAX_INT16. Platform implementations should attempt map this range linearly to the min/max slew rate of their hardware.\n\n\nDefinition at line\n[89](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\nof file\n[local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)\n.\n\n*** ** * ** ***\n\nThe documentation for this struct was generated from the following file:\n\n- hardware/libhardware/include/hardware/ [local_time_hal.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/local_time_hal.h)"]]
