SPACE_AMOUNT
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parent
029864fe4f
commit
1ab9afe8a5
23
ps/output.c
23
ps/output.c
@ -1603,6 +1603,9 @@ static void check_header_width(void){
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/********** show one process (NULL proc prints header) **********/
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//#define SPACE_AMOUNT page_size
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#define SPACE_AMOUNT 128
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static char *saved_outbuf;
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void show_one_proc(const proc_t *restrict const p){
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@ -1724,7 +1727,7 @@ void show_one_proc(const proc_t *restrict const p){
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*/
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space = correct - actual + leftpad;
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if(space<1) space=dospace;
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if(space>page_size) space=page_size; // only have so much available
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if(space>SPACE_AMOUNT) space=SPACE_AMOUNT; // only have so much available
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/* print data, set x position stuff */
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amount = strlen(outbuf); /* post-chop data width */
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@ -1786,23 +1789,21 @@ void init_output(void){
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case 1024: page_shift = 10; break;
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}
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outbuf_pages = OUTBUF_SIZE/page_size+1; // round up
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// add page_size-1 to round up
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outbuf_pages = (OUTBUF_SIZE+SPACE_AMOUNT+page_size-1)/page_size;
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outbuf = mmap(
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0,
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page_size * (1+1+outbuf_pages+1),
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page_size * (outbuf_pages+1), // 1 more, for guard page at high addresses
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PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANONYMOUS,
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-1,
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0
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);
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mprotect(outbuf, page_size, PROT_NONE); // gaurd page
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outbuf += page_size;
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memset(outbuf, ' ', page_size);
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mprotect(outbuf, page_size, PROT_READ); // space page
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outbuf += page_size;
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// now outbuf points where we want it
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mprotect(outbuf + page_size * outbuf_pages, page_size, PROT_NONE); // gaurd page
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saved_outbuf = outbuf;
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memset(outbuf, ' ', SPACE_AMOUNT);
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if(SPACE_AMOUNT==page_size) mprotect(outbuf, page_size, PROT_READ);
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mprotect(outbuf + page_size*outbuf_pages, page_size, PROT_NONE); // gaurd page
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saved_outbuf = outbuf + SPACE_AMOUNT;
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// available space: page_size*outbuf_pages-SPACE_AMOUNT
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seconds_since_1970 = time(NULL);
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time_of_boot = seconds_since_1970 - seconds_since_boot;
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