1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
#include "jemalloc/internal/jemalloc_preamble.h"
#include "jemalloc/internal/jemalloc_internal_includes.h"
#include "jemalloc/internal/assert.h"
#include "jemalloc/internal/malloc_io.h"
void
witness_init(witness_t *witness, const char *name, witness_rank_t rank,
witness_comp_t *comp, void *opaque) {
witness->name = name;
witness->rank = rank;
witness->comp = comp;
witness->opaque = opaque;
}
static void
witness_print_witness(witness_t *w, unsigned n) {
assert(n > 0);
if (n == 1) {
malloc_printf(" %s(%u)", w->name, w->rank);
} else {
malloc_printf(" %s(%u)X%u", w->name, w->rank, n);
}
}
static void
witness_print_witnesses(const witness_list_t *witnesses) {
witness_t *w, *last = NULL;
unsigned n = 0;
ql_foreach(w, witnesses, link) {
if (last != NULL && w->rank > last->rank) {
assert(w->name != last->name);
witness_print_witness(last, n);
n = 0;
} else if (last != NULL) {
assert(w->rank == last->rank);
assert(w->name == last->name);
}
last = w;
++n;
}
if (last != NULL) {
witness_print_witness(last, n);
}
}
static void
witness_lock_error_impl(const witness_list_t *witnesses,
const witness_t *witness) {
malloc_printf("<jemalloc>: Lock rank order reversal:");
witness_print_witnesses(witnesses);
malloc_printf(" %s(%u)\n", witness->name, witness->rank);
abort();
}
witness_lock_error_t *JET_MUTABLE witness_lock_error = witness_lock_error_impl;
static void
witness_owner_error_impl(const witness_t *witness) {
malloc_printf("<jemalloc>: Should own %s(%u)\n", witness->name,
witness->rank);
abort();
}
witness_owner_error_t *JET_MUTABLE witness_owner_error =
witness_owner_error_impl;
static void
witness_not_owner_error_impl(const witness_t *witness) {
malloc_printf("<jemalloc>: Should not own %s(%u)\n", witness->name,
witness->rank);
abort();
}
witness_not_owner_error_t *JET_MUTABLE witness_not_owner_error =
witness_not_owner_error_impl;
static void
witness_depth_error_impl(const witness_list_t *witnesses,
witness_rank_t rank_inclusive, unsigned depth) {
malloc_printf("<jemalloc>: Should own %u lock%s of rank >= %u:", depth,
(depth != 1) ? "s" : "", rank_inclusive);
witness_print_witnesses(witnesses);
malloc_printf("\n");
abort();
}
witness_depth_error_t *JET_MUTABLE witness_depth_error =
witness_depth_error_impl;
void
witnesses_cleanup(witness_tsd_t *witness_tsd) {
witness_assert_lockless(witness_tsd_tsdn(witness_tsd));
/* Do nothing. */
}
void
witness_prefork(witness_tsd_t *witness_tsd) {
if (!config_debug) {
return;
}
witness_tsd->forking = true;
}
void
witness_postfork_parent(witness_tsd_t *witness_tsd) {
if (!config_debug) {
return;
}
witness_tsd->forking = false;
}
void
witness_postfork_child(witness_tsd_t *witness_tsd) {
if (!config_debug) {
return;
}
#ifndef JEMALLOC_MUTEX_INIT_CB
witness_list_t *witnesses;
witnesses = &witness_tsd->witnesses;
ql_new(witnesses);
#endif
witness_tsd->forking = false;
}
|
