heap

heap()

:: Heap area size currently in use.

return

non-negative integer

• Command heap() returns an integer which is the byte size of current Asir heap area. Heap is a memory area where various data for expressions and user programs of Asir and is managed by the garbage collector. While Asir is running, size of the heap is monotonously non-decreasing against the time elapsed. If it happens to exceed the real memory size, most (real world) time is consumed for swapping between real memory and disk memory.
• For a platform with little real memory, it is recommended to set up Asir configuration tuned for GC functions by -adj option at the activation of Asir. (See section Command line options.)

% asir -adj 16  
[0] load("fctrdata")$
0
[97] cputime(1)$
0msec
[98] heap();
524288
0msec
[99] fctr(Wang[8])$
3.190sec + gc : 3.420sec
[100] heap();
1118208
0msec
[101] quit;
% asir
[0] load("fctrdata")$   
0
[97] cputime(1)$   
0msec
[98] heap();    
827392
0msec
[99] fctr(Wang[8])$
3.000sec + gc : 1.180sec
[100] heap();       
1626112
0msec
[101] quit;

References

section Command line options.

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