GCC Code Coverage Report

Directory: cvmfs/
File: cvmfs/ingestion/task_read.cc
Date: 2024-04-28 02:33:07
Exec Total Coverage
Lines: 36 40 90.0%
Branches: 37 66 56.1%
Line Branch Exec Source
1 /**
2 * This file is part of the CernVM File System.
3 */
4
5 #include "ingestion/task_read.h"
6
7 #include <errno.h>
8 #include <fcntl.h>
9 #include <unistd.h>
10
11 #include <cstring>
12
13 #include "backoff.h"
14 #include "util/exception.h"
15 #include "util/logging.h"
16 #include "util/platform.h"
17 #include "util/posix.h"
18 #include "util/smalloc.h"
19
20
21 atomic_int64 TaskRead::tag_seq_ = 0;
22
23
24 250041 void TaskRead::Process(FileItem *item) {
25
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 250041 BackoffThrottle throttle(kThrottleInitMs, kThrottleMaxMs, kThrottleResetMs);
26
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 250038 if ((high_watermark_ > 0) && (BlockItem::managed_bytes() > high_watermark_)) {
27 1 atomic_inc64(&n_block_);
28 do {
29
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 8 throttle.Throttle();
30
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 8 } while (BlockItem::managed_bytes() > low_watermark_);
31 }
32
33
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 250042 if (item->Open() == false) {
34 ✗ PANIC(kLogStderr, "failed to open %s (%d)", item->path().c_str(), errno);
35 }
36 uint64_t size;
37
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 250007 if (item->GetSize(&size) == false) {
38 ✗ PANIC(kLogStderr, "failed to fstat %s (%d)", item->path().c_str(), errno);
39 }
40 249995 item->set_size(size);
41
42
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 249978 if (item->may_have_chunks()) {
43 499850 item->set_may_have_chunks(
44
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 249936 item->chunk_detector()->MightFindChunks(item->size()));
45 }
46
47 unsigned char *buffer[kBlockSize];
48 249964 uint64_t tag = atomic_xadd64(&tag_seq_, 1);
49 250051 ssize_t nbytes = -1;
50 250051 unsigned cnt = 0;
51 do {
52
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 552904 nbytes = item->Read(buffer, kBlockSize);
53
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 553364 if (nbytes < 0) {
54 ✗ PANIC(kLogStderr, "failed to read %s (%d)", item->path().c_str(), errno);
55 }
56
57
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 553364 BlockItem *block_item = new BlockItem(tag, allocator_);
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 552449 block_item->SetFileItem(item);
59
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 552360 if (nbytes == 0) {
60
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 249864 item->Close();
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 249871 block_item->MakeStop();
62 } else {
63
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 302496 block_item->MakeDataCopy(reinterpret_cast<unsigned char *>(buffer),
64 nbytes);
65 }
66
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 553814 tubes_out_->Dispatch(block_item);
67
68 552647 cnt++;
69
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 552647 if ((cnt % 32) == 0) {
70
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 3375 if ((high_watermark_ > 0) &&
71
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 1688 (BlockItem::managed_bytes() > high_watermark_))
72 {
73 ✗ throttle.Throttle();
74 }
75 }
76
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 552646 } while (nbytes > 0);
77 249793 }
78
79
80 2817 void TaskRead::SetWatermarks(uint64_t low, uint64_t high) {
81
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 2817 assert(high > low);
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 2817 assert(low > 0);
83 2817 low_watermark_ = low;
84 2817 high_watermark_ = high;
85 2817 }
86