The DevTools team need to log some telemetry about whether the current Firefox
build is 32 or 64-bit.
I was told to use XPCOMABI but the possible results are x86, x86_64, ia_64,
ppc, SPARC, Alpha or ARM.
The problem is that early mac versions were 32-bit so assuming ppc is 64-bit is
not accurate. Most cellphones that have an ARM processor are 32-bit but not
all. There are similar issues with SPARC and Alpha.
Does anybody know a reliable way to detect a 32 or 64-bit build? I am happy to
extend XPCOMABI if that is what it takes.
Here is the current unreliable code:
+ _getIs64Bits: function() {
+ let appInfo =
Cc["@mozilla.org/xre/app-info;1"].getService(Ci.nsIXULAppInfo);
+
+ let processor = appInfo.XPCOMABI.split("-")[0];
+
+ switch (processor) {
+ case "x86":
+ return 0; // 32-bit
+ case "x86_64":
+ case "ia_64":
+ case "ppc":
+ return 1; // 64-bit
+ }
+
+ return 2; // Unknown - SPARC, Alpha or ARM.
+ },
/Mike
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