#ifndef JEMALLOC_INTERNAL_QL_H
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#define JEMALLOC_INTERNAL_QL_H
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#include "jemalloc/internal/qr.h"
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/* List definitions. */
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#define ql_head(a_type) \
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struct { \
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a_type *qlh_first; \
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}
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#define ql_head_initializer(a_head) {NULL}
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#define ql_elm(a_type) qr(a_type)
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/* List functions. */
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#define ql_new(a_head) do { \
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(a_head)->qlh_first = NULL; \
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} while (0)
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#define ql_elm_new(a_elm, a_field) qr_new((a_elm), a_field)
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#define ql_first(a_head) ((a_head)->qlh_first)
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#define ql_last(a_head, a_field) \
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((ql_first(a_head) != NULL) \
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? qr_prev(ql_first(a_head), a_field) : NULL)
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#define ql_next(a_head, a_elm, a_field) \
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((ql_last(a_head, a_field) != (a_elm)) \
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? qr_next((a_elm), a_field) : NULL)
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#define ql_prev(a_head, a_elm, a_field) \
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((ql_first(a_head) != (a_elm)) ? qr_prev((a_elm), a_field) \
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: NULL)
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#define ql_before_insert(a_head, a_qlelm, a_elm, a_field) do { \
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qr_before_insert((a_qlelm), (a_elm), a_field); \
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if (ql_first(a_head) == (a_qlelm)) { \
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ql_first(a_head) = (a_elm); \
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} \
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} while (0)
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#define ql_after_insert(a_qlelm, a_elm, a_field) \
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qr_after_insert((a_qlelm), (a_elm), a_field)
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#define ql_head_insert(a_head, a_elm, a_field) do { \
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if (ql_first(a_head) != NULL) { \
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qr_before_insert(ql_first(a_head), (a_elm), a_field); \
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} \
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ql_first(a_head) = (a_elm); \
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} while (0)
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#define ql_tail_insert(a_head, a_elm, a_field) do { \
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if (ql_first(a_head) != NULL) { \
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qr_before_insert(ql_first(a_head), (a_elm), a_field); \
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} \
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ql_first(a_head) = qr_next((a_elm), a_field); \
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} while (0)
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#define ql_remove(a_head, a_elm, a_field) do { \
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if (ql_first(a_head) == (a_elm)) { \
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ql_first(a_head) = qr_next(ql_first(a_head), a_field); \
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} \
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if (ql_first(a_head) != (a_elm)) { \
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qr_remove((a_elm), a_field); \
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} else { \
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ql_first(a_head) = NULL; \
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} \
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} while (0)
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#define ql_head_remove(a_head, a_type, a_field) do { \
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a_type *t = ql_first(a_head); \
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ql_remove((a_head), t, a_field); \
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} while (0)
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#define ql_tail_remove(a_head, a_type, a_field) do { \
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a_type *t = ql_last(a_head, a_field); \
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ql_remove((a_head), t, a_field); \
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} while (0)
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#define ql_foreach(a_var, a_head, a_field) \
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qr_foreach((a_var), ql_first(a_head), a_field)
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#define ql_reverse_foreach(a_var, a_head, a_field) \
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qr_reverse_foreach((a_var), ql_first(a_head), a_field)
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#endif /* JEMALLOC_INTERNAL_QL_H */
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