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libsnapshot: configure threshold size

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Test: th
Change-Id: Iba59fdc3e1188dd343314d129806d2c4c94aa8c5
This commit is contained in:
Daniel Zheng 2024-05-29 10:44:09 -07:00
parent db560090e4
commit 28801377a5
1 changed files with 11 additions and 4 deletions
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15
fs_mgr/libsnapshot/snapuserd/user-space-merge/snapuserd_verify.cpp
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@ -20,6 +20,7 @@
#include <android-base/scopeguard.h>
#include <android-base/strings.h>
#include "android-base/properties.h"
#include "snapuserd_core.h"
namespace android {
@ -104,7 +105,9 @@ bool UpdateVerify::VerifyBlocks(const std::string& partition_name,
}
loff_t file_offset = offset;
const uint64_t read_sz = kBlockSizeVerify;
auto verify_block_size = android::base::GetUintProperty<uint>("ro.virtual_ab.verify_block_size",
kBlockSizeVerify);
const uint64_t read_sz = verify_block_size;
void* addr;
ssize_t page_size = getpagesize();
@ -130,7 +133,7 @@ bool UpdateVerify::VerifyBlocks(const std::string& partition_name,
}
bytes_read += to_read;
file_offset += (skip_blocks * kBlockSizeVerify);
file_offset += (skip_blocks * verify_block_size);
if (file_offset >= dev_sz) {
break;
}
@ -184,7 +187,9 @@ bool UpdateVerify::VerifyPartition(const std::string& partition_name,
* latency.
*/
int num_threads = kMinThreadsToVerify;
if (dev_sz > kThresholdSize) {
auto verify_threshold_size = android::base::GetUintProperty<uint>(
"ro.virtual_ab.verify_threshold_size", kThresholdSize);
if (dev_sz > verify_threshold_size) {
num_threads = kMaxThreadsToVerify;
}
@ -192,11 +197,13 @@ bool UpdateVerify::VerifyPartition(const std::string& partition_name,
off_t start_offset = 0;
const int skip_blocks = num_threads;
auto verify_block_size =
android::base::GetUintProperty("ro.virtual_ab.verify_block_size", kBlockSizeVerify);
while (num_threads) {
threads.emplace_back(std::async(std::launch::async, &UpdateVerify::VerifyBlocks, this,
partition_name, dm_block_device, start_offset, skip_blocks,
dev_sz));
start_offset += kBlockSizeVerify;
start_offset += verify_block_size;
num_threads -= 1;
if (start_offset >= dev_sz) {
break;