SolidSyslog coverage report
Current view: top level - Platform/StdAtomic/Source - SolidSyslogStdAtomicCounter.c (source / functions) Coverage Total Hit
Test: SolidSyslog Lines: 100.0 % 20 20
Test Date: 2026-11-12 23:14:35 Functions: 100.0 % 5 5
Branches: 75.0 % 4 3

             Branch data     Line data    Source code
       1                 :             : /* SPDX-FileCopyrightText: Copyright 2026 Cozens Software Solutions Limited
       2                 :             :  * SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0 OR LicenseRef-PolyForm-Internal-Use-1.0.0 OR LicenseRef-COSOSO-Commercial
       3                 :             :  */
       4                 :             : 
       5                 :             : #include "SolidSyslogStdAtomicCounter.h"
       6                 :             : 
       7                 :             : #include <stdatomic.h>
       8                 :             : #include <stdint.h>
       9                 :             : 
      10                 :             : #include "SolidSyslogAtomicCounter.h"
      11                 :             : #include "SolidSyslogAtomicCounterDefinition.h"
      12                 :             : #include "SolidSyslogError.h"
      13                 :             : #include "SolidSyslogNullAtomicCounter.h"
      14                 :             : #include "SolidSyslogStdAtomicCounterErrors.h"
      15                 :             : #include "SolidSyslogStdAtomicCounterPrivate.h"
      16                 :             : 
      17                 :             : const struct SolidSyslogErrorSource SolidSyslogStdAtomicCounterErrorSource = {
      18                 :             :     "StdAtomicCounter",
      19                 :             :     SolidSyslogAtomicCounterErrors_Name
      20                 :             : };
      21                 :             : 
      22                 :             : static uint32_t StdAtomicCounter_Increment(struct SolidSyslogAtomicCounter* base);
      23                 :             : static void StdAtomicCounter_Init(struct SolidSyslogStdAtomicCounter* self, uint32_t value);
      24                 :             : 
      25                 :             : static inline struct SolidSyslogStdAtomicCounter* StdAtomicCounter_SelfFromBase(struct SolidSyslogAtomicCounter* base);
      26                 :             : 
      27                 :          45 : void SolidSyslogStdAtomicCounter_Initialise(struct SolidSyslogAtomicCounter* base)
      28                 :             : {
      29                 :          45 :     struct SolidSyslogStdAtomicCounter* self = StdAtomicCounter_SelfFromBase(base);
      30                 :          45 :     self->Base.Increment = StdAtomicCounter_Increment;
      31                 :          45 :     StdAtomicCounter_Init(self, 0U);
      32                 :          45 : }
      33                 :             : 
      34                 :          81 : static inline struct SolidSyslogStdAtomicCounter* StdAtomicCounter_SelfFromBase(struct SolidSyslogAtomicCounter* base)
      35                 :             : {
      36                 :          81 :     return (struct SolidSyslogStdAtomicCounter*) base;
      37                 :             : }
      38                 :             : 
      39                 :             : /* atomic_store rather than atomic_init: a released pool slot is handed out again,
      40                 :             :  * so this runs a second time on an object C11 lets you initialise only once. */
      41                 :          48 : static void StdAtomicCounter_Init(struct SolidSyslogStdAtomicCounter* self, uint32_t value)
      42                 :             : {
      43                 :          48 :     atomic_store_explicit(&self->Value, value, memory_order_relaxed);
      44                 :          48 : }
      45                 :             : 
      46                 :          45 : void SolidSyslogStdAtomicCounter_Cleanup(struct SolidSyslogAtomicCounter* base)
      47                 :             : {
      48                 :             :     /* Overwrite the abstract base with the shared NullAtomicCounter vtable so
      49                 :             :      * use-after-destroy is a safe no-op rather than a NULL-fn-pointer crash. */
      50                 :          45 :     *base = *SolidSyslogNullAtomicCounter_Get();
      51                 :          45 : }
      52                 :             : 
      53                 :          33 : static uint32_t StdAtomicCounter_Increment(struct SolidSyslogAtomicCounter* base)
      54                 :             : {
      55                 :          33 :     struct SolidSyslogStdAtomicCounter* self = StdAtomicCounter_SelfFromBase(base);
      56                 :          33 :     uint32_t current = atomic_load_explicit(&self->Value, memory_order_relaxed);
      57                 :          33 :     uint32_t next = 0U;
      58                 :             :     do
      59                 :             :     {
      60         [ +  + ]:          33 :         next = (current >= SOLIDSYSLOG_SEQUENCE_ID_MAX) ? 1U : (current + 1U);
      61         [ -  + ]:          33 :     } while (!atomic_compare_exchange_strong_explicit(
      62                 :             :         &self->Value,
      63                 :             :         &current,
      64                 :             :         next,
      65                 :             :         memory_order_relaxed,
      66                 :             :         memory_order_relaxed
      67                 :             :     ));
      68                 :          33 :     return next;
      69                 :             : }
        

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