GCC Code Coverage Report

Directory: cvmfs/
File: cvmfs/ingestion/task_read.cc
Date: 2025-08-31 02:39:21
Exec Total Coverage
Lines: 36 40 90.0%
Branches: 36 66 54.5%
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 4500500 void TaskRead::Process(FileItem *item) {
25
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 4500500 BackoffThrottle throttle(kThrottleInitMs, kThrottleMaxMs, kThrottleResetMs);
26
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 4500968 if ((high_watermark_ > 0) && (BlockItem::managed_bytes() > high_watermark_)) {
27 4 atomic_inc64(&n_block_);
28 do {
29
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 4 throttle.Throttle();
30
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 4 } while (BlockItem::managed_bytes() > low_watermark_);
31 }
32
33
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 4500392 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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 4499834 if (item->GetSize(&size) == false) {
38 ✗ PANIC(kLogStderr, "failed to fstat %s (%d)", item->path().c_str(), errno);
39 }
40 4499420 item->set_size(size);
41
42
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 4499294 if (item->may_have_chunks()) {
43 8996096 item->set_may_have_chunks(
44
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 4497850 item->chunk_detector()->MightFindChunks(item->size()));
45 }
46
47 unsigned char *buffer[kBlockSize];
48 4500032 const uint64_t tag = atomic_xadd64(&tag_seq_, 1);
49 4501526 ssize_t nbytes = -1;
50 4501526 unsigned cnt = 0;
51 do {
52
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 9953019 nbytes = item->Read(buffer, kBlockSize);
53
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 9956313 if (nbytes < 0) {
54 ✗ PANIC(kLogStderr, "failed to read %s (%d)", item->path().c_str(), errno);
55 }
56
57
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 9956313 BlockItem *block_item = new BlockItem(tag, allocator_);
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 9936657 block_item->SetFileItem(item);
59
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 9935325 if (nbytes == 0) {
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 4496396 item->Close();
61
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 4496144 block_item->MakeStop();
62 } else {
63
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 5438929 block_item->MakeDataCopy(reinterpret_cast<unsigned char *>(buffer),
64 nbytes);
65 }
66
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 9966879 tubes_out_->Dispatch(block_item);
67
68 9946197 cnt++;
69
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 9946197 if ((cnt % 32) == 0) {
70 60750 if ((high_watermark_ > 0)
71
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 30366 && (BlockItem::managed_bytes() > high_watermark_)) {
72 ✗ throttle.Throttle();
73 }
74 }
75
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 9946215 } while (nbytes > 0);
76 4494722 }
77
78
79 61764 void TaskRead::SetWatermarks(uint64_t low, uint64_t high) {
80
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 61764 assert(high > low);
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 61764 assert(low > 0);
82 61764 low_watermark_ = low;
83 61764 high_watermark_ = high;
84 61764 }
85