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maintain own free list of buffer headers

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This commit is contained in:
ceriel 1990-01-29 11:41:37 +00:00
parent 343dbb810f
commit 0c4835caf3
1 changed files with 6 additions and 3 deletions
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9
modules/src/input/inp_pkg.body
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@ -87,7 +87,7 @@ struct INP_i_buf {
# endif not INP_READ_IN_ONE
char *_ipp;
INP_PRIVATE struct INP_buffer_header *INP_head;
INP_PRIVATE struct INP_buffer_header *INP_head, *INP_free;
#ifdef INP_READ_IN_ONE
/* INP_rdfile() creates a buffer in which the text of the file
@ -162,7 +162,9 @@ INP_push_bh()
bh->bh_i = INP_VAR;
#endif INP_TYPE
}
if (!(bh = (struct INP_buffer_header *)malloc(sizeof(struct INP_buffer_header)))) return 0;
bh = INP_free;
if (bh) INP_free = bh->bh_next;
else if (!(bh = (struct INP_buffer_header *)malloc(sizeof(struct INP_buffer_header)))) return 0;
bh->bh_next = INP_head;
bh->bh_eofreturned = 0;
INP_head = bh;
@ -180,7 +182,8 @@ INP_pop_bh()
bh = bh->bh_next;
free((char *) INP_head);
INP_head->bh_next = INP_free;
INP_free = INP_head;
INP_head = bh;
if (!bh) { /* no more entries */