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Rename internal interface.

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This commit is contained in:
Patrick Pelissier committed 2021-02-13 11:45:16 +01:00
1 parent 56b2adc57d
commit c4d339cb62
3 files changed
+76 -74
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m-snapshot.h
+28 -28
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@@ -355,13 +355,13 @@ M_BEGIN_PROTECTED_CODE
- cptTab: ref counter array to keep track of how many readers use the corresponding buffer.
- freeList: a pool of free integers.
*/
typedef struct snapshot_mrsw_int_s {
typedef struct m_snapshot_mrsw_s {
atomic_uint lastNext;
unsigned int currentWrite;
size_t n_reader;
atomic_uint *cptTab;
genint_t freeList;
} snapshot_mrsw_int_ct[1];
} m_snapshot_mrsw_ct[1];
// can't check currentWrite due to potential data race on it
#define M_SNAPSH0T_SPMC_INT_CONTRACT(s) do { \
@@ -372,9 +372,9 @@ typedef struct snapshot_mrsw_int_s {
M_ASSERT (s->cptTab != NULL); \
} while (0)
/* Initialize snapshot_mrsw_int_ct for n readers (constructor) */
/* Initialize m_snapshot_mrsw_ct for n readers (constructor) */
static inline void
snapshot_mrsw_int_init(snapshot_mrsw_int_ct s, size_t n)
m_snapsh0t_mrsw_init(m_snapshot_mrsw_ct s, size_t n)
{
M_ASSERT (s != NULL);
M_ASSERT (n >= 1 && n <= M_SNAPSH0T_SPMC_MAX_READER);
@@ -405,9 +405,9 @@ snapshot_mrsw_int_init(snapshot_mrsw_int_ct s, size_t n)
M_SNAPSH0T_SPMC_INT_CONTRACT(s);
}
/* Clear snapshot_mrsw_int_ct (destructor) */
/* Clear m_snapshot_mrsw_ct (destructor) */
static inline void
snapshot_mrsw_int_clear(snapshot_mrsw_int_ct s)
m_snapsh0t_mrsw_clear(m_snapshot_mrsw_ct s)
{
M_SNAPSH0T_SPMC_INT_CONTRACT(s);
M_MEMORY_FREE (s->cptTab);
@@ -418,7 +418,7 @@ snapshot_mrsw_int_clear(snapshot_mrsw_int_ct s)
/* Return the current index that is written in the buffer */
static inline unsigned int
snapshot_mrsw_int_get_write_idx(snapshot_mrsw_int_ct s)
m_snapsh0t_mrsw_get_write_idx(m_snapshot_mrsw_ct s)
{
M_SNAPSH0T_SPMC_INT_CONTRACT(s);
return s->currentWrite;
@@ -426,16 +426,16 @@ snapshot_mrsw_int_get_write_idx(snapshot_mrsw_int_ct s)
/* Return the number of readers */
static inline unsigned int
snapshot_mrsw_int_size(snapshot_mrsw_int_ct s)
m_snapsh0t_mrsw_size(m_snapshot_mrsw_ct s)
{
M_SNAPSH0T_SPMC_INT_CONTRACT(s);
return (unsigned int) s->n_reader;
}
/* Give the current index that is written to the readers,
and return new available index for writter */
and return new available index for the writer thread */
static inline unsigned int
snapshot_mrsw_int_write_idx(snapshot_mrsw_int_ct s, unsigned int idx)
m_snapsh0t_mrsw_write_idx(m_snapshot_mrsw_ct s, unsigned int idx)
{
M_SNAPSH0T_SPMC_INT_CONTRACT(s);
@@ -477,16 +477,16 @@ snapshot_mrsw_int_write_idx(snapshot_mrsw_int_ct s, unsigned int idx)
/* Perform a swap of the current write buffer and return a new one */
static inline unsigned int
snapshot_mrsw_int_write(snapshot_mrsw_int_ct s)
m_snapsh0t_mrsw_write(m_snapshot_mrsw_ct s)
{
s->currentWrite = snapshot_mrsw_int_write_idx(s, s->currentWrite);
s->currentWrite = m_snapsh0t_mrsw_write_idx(s, s->currentWrite);
M_SNAPSH0T_SPMC_INT_CONTRACT(s);
return s->currentWrite;
}
/* Start writing to the write buffer and return its index */
static inline unsigned int
snapshot_mrsw_int_write_start(snapshot_mrsw_int_ct s)
m_snapsh0t_mrsw_write_start(m_snapshot_mrsw_ct s)
{
M_SNAPSH0T_SPMC_INT_CONTRACT(s);
// Get a new buffer.
@@ -501,7 +501,7 @@ snapshot_mrsw_int_write_start(snapshot_mrsw_int_ct s)
/* End writing to the given write buffer */
static inline void
snapshot_mrsw_int_write_end(snapshot_mrsw_int_ct s, unsigned int idx)
m_snapsh0t_mrsw_write_end(m_snapshot_mrsw_ct s, unsigned int idx)
{
M_SNAPSH0T_SPMC_INT_CONTRACT(s);
@@ -523,7 +523,7 @@ snapshot_mrsw_int_write_end(snapshot_mrsw_int_ct s, unsigned int idx)
/* Start reading the latest written buffer and return the index to it */
static inline unsigned int
snapshot_mrsw_int_read_start(snapshot_mrsw_int_ct s)
m_snapsh0t_mrsw_read_start(m_snapshot_mrsw_ct s)
{
M_SNAPSH0T_SPMC_INT_CONTRACT(s);
unsigned int idx, previous;
@@ -566,7 +566,7 @@ snapshot_mrsw_int_read_start(snapshot_mrsw_int_ct s)
/* End the reading the given buffer */
static inline void
snapshot_mrsw_int_read_end(snapshot_mrsw_int_ct s, unsigned int idx)
m_snapsh0t_mrsw_read_end(m_snapshot_mrsw_ct s, unsigned int idx)
{
M_SNAPSH0T_SPMC_INT_CONTRACT(s);
M_ASSERT (idx < s->n_reader + M_SNAPSH0T_SPMC_EXTRA_BUFFER);
@@ -611,7 +611,7 @@ snapshot_mrsw_int_read_end(snapshot_mrsw_int_ct s, unsigned int idx)
\
typedef struct M_C(name, _s) { \
M_C(name, _aligned_type_ct) *data; \
snapshot_mrsw_int_ct core; \
m_snapshot_mrsw_ct core; \
} snapshot_t[1]; \
\
/* Define internal types for oplist */ \
@@ -635,7 +635,7 @@ snapshot_mrsw_int_read_end(snapshot_mrsw_int_ct s, unsigned int idx)
for(size_t i = 0; i < nReader + M_SNAPSH0T_SPMC_EXTRA_BUFFER; i++) { \
M_CALL_INIT(oplist, snap->data[i].x); \
} \
snapshot_mrsw_int_init(snap->core, nReader); \
m_snapsh0t_mrsw_init(snap->core, nReader); \
M_SNAPSH0T_SPMC_CONTRACT(snap); \
} \
\
@@ -643,19 +643,19 @@ snapshot_mrsw_int_read_end(snapshot_mrsw_int_ct s, unsigned int idx)
M_C(name, _clear)(snapshot_t snap) \
{ \
M_SNAPSH0T_SPMC_CONTRACT(snap); \
size_t nReader = snapshot_mrsw_int_size(snap->core); \
size_t nReader = m_snapsh0t_mrsw_size(snap->core); \
for(size_t i = 0; i < nReader + M_SNAPSH0T_SPMC_EXTRA_BUFFER; i++) { \
M_CALL_CLEAR(oplist, snap->data[i].x); \
} \
M_CALL_FREE(oplist, snap->data); \
snapshot_mrsw_int_clear(snap->core); \
m_snapsh0t_mrsw_clear(snap->core); \
} \
\
static inline type * \
M_C(name, _write)(snapshot_t snap) \
{ \
M_SNAPSH0T_SPMC_CONTRACT(snap); \
const unsigned int idx = snapshot_mrsw_int_write(snap->core); \
const unsigned int idx = m_snapsh0t_mrsw_write(snap->core); \
return &snap->data[idx].x; \
} \
\
@@ -663,7 +663,7 @@ snapshot_mrsw_int_read_end(snapshot_mrsw_int_ct s, unsigned int idx)
M_C(name, _read_start)(snapshot_t snap) \
{ \
M_SNAPSH0T_SPMC_CONTRACT(snap); \
const unsigned int idx = snapshot_mrsw_int_read_start(snap->core); \
const unsigned int idx = m_snapsh0t_mrsw_read_start(snap->core); \
return M_CONST_CAST(type, &snap->data[idx].x); \
} \
\
@@ -678,14 +678,14 @@ snapshot_mrsw_int_read_end(snapshot_mrsw_int_ct s, unsigned int idx)
M_ASSERT (oldx < snap->data + snap->core->n_reader + M_SNAPSH0T_SPMC_EXTRA_BUFFER); \
M_ASSERT(snap->core->n_reader +M_SNAPSH0T_SPMC_EXTRA_BUFFER < UINT_MAX); \
const unsigned int idx = (unsigned int) (oldx - snap->data); \
snapshot_mrsw_int_read_end(snap->core, idx); \
m_snapsh0t_mrsw_read_end(snap->core, idx); \
} \
\
static inline type * \
M_C(name, _get_write_buffer)(snapshot_t snap) \
{ \
M_SNAPSH0T_SPMC_CONTRACT(snap); \
const unsigned int idx = snapshot_mrsw_int_get_write_idx(snap->core); \
const unsigned int idx = m_snapsh0t_mrsw_get_write_idx(snap->core); \
return &snap->data[idx].x; \
} \
\
@@ -730,7 +730,7 @@ snapshot_mrsw_int_read_end(snapshot_mrsw_int_ct s, unsigned int idx)
M_C(name, _mrsw_init)(snap->core, nReader + nWriter -1 ); \
unsigned int idx = snap->core->core->currentWrite; \
snap->core->core->currentWrite = GENINT_ERROR; \
snapshot_mrsw_int_write_end(snap->core->core, idx); \
m_snapsh0t_mrsw_write_end(snap->core->core, idx); \
} \
\
static inline void \
@@ -743,7 +743,7 @@ snapshot_mrsw_int_read_end(snapshot_mrsw_int_ct s, unsigned int idx)
M_C(name, _write_start)(snapshot_t snap) \
{ \
M_SNAPSH0T_SPMC_CONTRACT(snap->core); \
const unsigned int idx = snapshot_mrsw_int_write_start(snap->core->core); \
const unsigned int idx = m_snapsh0t_mrsw_write_start(snap->core->core); \
return &snap->core->data[idx].x; \
} \
\
@@ -757,7 +757,7 @@ snapshot_mrsw_int_read_end(snapshot_mrsw_int_ct s, unsigned int idx)
M_ASSERT (oldx < snap->core->data + snap->core->core->n_reader + M_SNAPSH0T_SPMC_EXTRA_BUFFER); \
M_ASSERT(snap->core->core->n_reader + M_SNAPSH0T_SPMC_EXTRA_BUFFER < UINT_MAX); \
const unsigned int idx = (unsigned int) (oldx - snap->core->data); \
snapshot_mrsw_int_write_end(snap->core->core, idx); \
m_snapsh0t_mrsw_write_end(snap->core->core, idx); \
} \
\
static inline type const * \
@@ -773,7 +773,7 @@ snapshot_mrsw_int_read_end(snapshot_mrsw_int_ct s, unsigned int idx)
} \
\
//TODO: _set_, _init_set
//FIXME: Evaluate the needs for the methods _set_, _init_set.
M_END_PROTECTED_CODE