Commit | Line | Data |
---|---|---|
55478183 | 1 | /* |
0235b0db | 2 | * SPDX-License-Identifier: MIT |
55478183 | 3 | * |
0235b0db | 4 | * Copyright 2019 Philippe Proulx <pproulx@efficios.com> |
55478183 PP |
5 | */ |
6 | ||
c4f23e30 FD |
7 | #include <stdbool.h> |
8 | ||
55478183 PP |
9 | #include <babeltrace2/babeltrace.h> |
10 | ||
11 | #include "common/common.h" | |
12 | #include "common/assert.h" | |
13 | #include "compat/glib.h" | |
14 | ||
15 | #include "details.h" | |
16 | #include "write.h" | |
17 | #include "obj-lifetime-mgmt.h" | |
18 | ||
19 | static | |
20 | void trace_class_destruction_listener(const bt_trace_class *tc, void *data) | |
21 | { | |
22 | struct details_comp *details_comp = data; | |
23 | ||
24 | BT_ASSERT(details_comp); | |
25 | BT_ASSERT(details_comp->meta); | |
26 | ||
27 | /* Remove from hash table, which also destroys the value */ | |
28 | g_hash_table_remove(details_comp->meta, tc); | |
29 | } | |
30 | ||
31 | static | |
32 | struct details_trace_class_meta *borrow_trace_class_meta( | |
33 | struct details_write_ctx *ctx, const bt_trace_class *tc) | |
34 | { | |
35 | struct details_trace_class_meta *details_tc_meta; | |
36 | ||
98b15851 PP |
37 | BT_ASSERT_DBG(ctx->details_comp->cfg.with_meta); |
38 | BT_ASSERT_DBG(ctx->details_comp->meta); | |
55478183 PP |
39 | details_tc_meta = g_hash_table_lookup(ctx->details_comp->meta, tc); |
40 | if (!details_tc_meta) { | |
41 | /* Not found: create one */ | |
42 | details_tc_meta = details_create_details_trace_class_meta(); | |
43 | if (!details_tc_meta) { | |
44 | goto error; | |
45 | } | |
46 | ||
47 | /* Register trace class destruction listener */ | |
48 | if (bt_trace_class_add_destruction_listener(tc, | |
49 | trace_class_destruction_listener, | |
50 | ctx->details_comp, | |
51 | &details_tc_meta->tc_destruction_listener_id)) { | |
52 | goto error; | |
53 | } | |
54 | ||
55 | /* Insert into hash table (becomes the owner) */ | |
56 | g_hash_table_insert(ctx->details_comp->meta, (void *) tc, | |
57 | details_tc_meta); | |
58 | } | |
59 | ||
60 | goto end; | |
61 | ||
62 | error: | |
63 | details_destroy_details_trace_class_meta(details_tc_meta); | |
64 | details_tc_meta = NULL; | |
65 | ||
66 | end: | |
67 | return details_tc_meta; | |
68 | } | |
69 | ||
70 | BT_HIDDEN | |
71 | bool details_need_to_write_meta_object(struct details_write_ctx *ctx, | |
72 | const bt_trace_class *tc, const void *obj) | |
73 | { | |
74 | bool need_to_write; | |
75 | struct details_trace_class_meta *details_tc_meta; | |
76 | ||
77 | if (!ctx->details_comp->cfg.with_meta) { | |
78 | need_to_write = false; | |
79 | goto end; | |
80 | } | |
81 | ||
98b15851 | 82 | BT_ASSERT_DBG(ctx->details_comp->meta); |
55478183 | 83 | details_tc_meta = g_hash_table_lookup(ctx->details_comp->meta, tc); |
98b15851 | 84 | BT_ASSERT_DBG(details_tc_meta); |
55478183 | 85 | need_to_write = |
5084732e | 86 | !g_hash_table_lookup(details_tc_meta->objects, obj); |
55478183 PP |
87 | |
88 | end: | |
89 | return need_to_write; | |
90 | } | |
91 | ||
92 | BT_HIDDEN | |
93 | void details_did_write_meta_object(struct details_write_ctx *ctx, | |
94 | const bt_trace_class *tc, const void *obj) | |
95 | { | |
96 | struct details_trace_class_meta *details_tc_meta; | |
97 | ||
98 | BT_ASSERT(ctx->details_comp->cfg.with_meta); | |
99 | details_tc_meta = borrow_trace_class_meta(ctx, tc); | |
100 | BT_ASSERT(details_tc_meta); | |
101 | g_hash_table_insert(details_tc_meta->objects, (gpointer) obj, | |
102 | GUINT_TO_POINTER(1)); | |
103 | } | |
104 | ||
105 | BT_HIDDEN | |
106 | bool details_need_to_write_trace_class(struct details_write_ctx *ctx, | |
107 | const bt_trace_class *tc) | |
108 | { | |
109 | struct details_trace_class_meta *details_tc_meta; | |
110 | bool need_to_write; | |
111 | ||
112 | if (!ctx->details_comp->cfg.with_meta) { | |
113 | need_to_write = false; | |
114 | goto end; | |
115 | } | |
116 | ||
98b15851 | 117 | BT_ASSERT_DBG(ctx->details_comp->meta); |
55478183 | 118 | details_tc_meta = g_hash_table_lookup(ctx->details_comp->meta, tc); |
5084732e | 119 | need_to_write = !details_tc_meta; |
55478183 PP |
120 | |
121 | end: | |
122 | return need_to_write; | |
123 | } | |
124 | ||
125 | BT_HIDDEN | |
126 | int details_did_write_trace_class(struct details_write_ctx *ctx, | |
127 | const bt_trace_class *tc) | |
128 | { | |
129 | int ret = 0; | |
130 | struct details_trace_class_meta *details_tc_meta; | |
131 | ||
132 | BT_ASSERT(ctx->details_comp->cfg.with_meta); | |
133 | ||
134 | /* borrow_trace_class_meta() creates an entry if none exists */ | |
135 | details_tc_meta = borrow_trace_class_meta(ctx, tc); | |
136 | if (!details_tc_meta) { | |
137 | ret = -1; | |
138 | } | |
139 | ||
140 | return ret; | |
141 | } | |
142 | ||
143 | static | |
144 | void trace_destruction_listener(const bt_trace *trace, void *data) | |
145 | { | |
146 | struct details_comp *details_comp = data; | |
147 | ||
148 | BT_ASSERT(details_comp); | |
149 | BT_ASSERT(details_comp->traces); | |
150 | ||
151 | /* Remove from hash table, which also destroys the value */ | |
152 | g_hash_table_remove(details_comp->traces, trace); | |
153 | } | |
154 | ||
155 | static | |
156 | struct details_trace *create_details_trace(uint64_t unique_id) | |
157 | { | |
158 | struct details_trace *details_trace = g_new0(struct details_trace, 1); | |
159 | ||
160 | if (!details_trace) { | |
161 | goto end; | |
162 | } | |
163 | ||
164 | details_trace->unique_id = unique_id; | |
165 | details_trace->trace_destruction_listener_id = UINT64_C(-1); | |
166 | ||
167 | end: | |
168 | return details_trace; | |
169 | } | |
170 | ||
171 | ||
172 | BT_HIDDEN | |
173 | int details_trace_unique_id(struct details_write_ctx *ctx, | |
174 | const bt_trace *trace, uint64_t *unique_id) | |
175 | { | |
176 | int ret = 0; | |
177 | struct details_trace *details_trace = NULL; | |
178 | ||
98b15851 PP |
179 | BT_ASSERT_DBG(unique_id); |
180 | BT_ASSERT_DBG(ctx->details_comp->traces); | |
55478183 PP |
181 | if (!bt_g_hash_table_contains(ctx->details_comp->traces, |
182 | trace)) { | |
183 | /* Not found: create one */ | |
184 | *unique_id = ctx->details_comp->next_unique_trace_id; | |
185 | details_trace = create_details_trace(*unique_id); | |
186 | if (!details_trace) { | |
187 | goto error; | |
188 | } | |
189 | ||
190 | ctx->details_comp->next_unique_trace_id++; | |
191 | ||
192 | /* Register trace destruction listener if there's none */ | |
193 | if (bt_trace_add_destruction_listener(trace, | |
194 | trace_destruction_listener, | |
195 | ctx->details_comp, | |
196 | &details_trace->trace_destruction_listener_id)) { | |
197 | goto error; | |
198 | } | |
199 | ||
200 | BT_ASSERT(details_trace->trace_destruction_listener_id != | |
201 | UINT64_C(-1)); | |
202 | ||
203 | /* Move to hash table */ | |
204 | g_hash_table_insert(ctx->details_comp->traces, (gpointer) trace, | |
205 | details_trace); | |
206 | details_trace = NULL; | |
207 | } else { | |
208 | /* Found */ | |
209 | details_trace = g_hash_table_lookup( | |
210 | ctx->details_comp->traces, trace); | |
211 | *unique_id = details_trace->unique_id; | |
212 | details_trace = NULL; | |
213 | } | |
214 | ||
215 | goto end; | |
216 | ||
217 | error: | |
218 | ret = -1; | |
219 | ||
220 | end: | |
19bbdc9b | 221 | g_free(details_trace); |
55478183 PP |
222 | |
223 | return ret; | |
224 | } |